Buffer solution Essays & Research Papers

Best Buffer solution Essays

  • Buffer Solutions - 1613 Words
    BUFFER SOLUTIONS CONTENTS 1. Introductions. 2. Principles of buffering. 3. Applications a. Simple buffering agents. b. "Universal" buffer mixtures. c. Common buffer compounds used in biology. 4. Buffer capacity. 5. Calculating buffer pH a. Monoprotic acids. b. Polyprotic acids. 6. Biblography. INTRODUCTION A buffer is...
    1,613 Words | 7 Pages
  • Buffer Solution - 649 Words
    BUFFER SOLUTION (ACID) An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt. Objectives: 1. Measure the pH of the unknown solution first with indicators and then with pH paper. 2. compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL...
    649 Words | 3 Pages
  • Acid Buffer Solution - 1070 Words
    BUFFERS By: Luis P. Bazan, RPh., Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of...
    1,070 Words | 7 Pages
  • Ph and Buffer Solution - 1998 Words
    Title: pH and buffer solutions Aim This experiment was carried out to determine the role of buffer solution and the factor which affect the buffer capacity. Besides, this experiment was carried out to investigate the solubility of protein casein over a range of pH concentration. This experiment also was carried out to determine the isoelectric point of the casein and the effect of the isoelectric point toward the casein solution. Methods Verification of the Henderson-Hasselbalch equation...
    1,998 Words | 7 Pages
  • All Buffer solution Essays

  • Preparation of Buffer and Solution - 1491 Words
    Experiment 3 : Preparation of Solutions and Buffers Objectives : 1. To study and understand the principle theory and formula of preparation of buffer and solution. 2. To learn the methods of buffer and solution preparation. 3. To focus on concentration units of molarity, percentage of concentration, and dilution of solution. Introduction : When a substance, called a solute, is dissolved in another substance, called the solvent, a solution is formed. A solution is known as a...
    1,491 Words | 6 Pages
  • Buffers - 1093 Words
    Buffers CALCULATIONS Table A. pH Measurement using pH meter Calculated pH Solution 1 – HoAc 0.10 M CH3COOH CH3COOH + H2O ⇌ CH3COO- + H3O+ i 0.10 ø ø c -x +x +x e 0.10 – x x x Ka = H3O+[CH3COO-]CH3COOH = x20.10 – x = 1.8 x 10-5 x = 1.33 x 10-3 M pH = -log [1.33 x 10-3] pH = 2.88 Solution 2 – HoAc – OAc...
    1,093 Words | 7 Pages
  • Buffer Solutions and the Common Ion effect
    Buffer solutions and common ion effect A buffer solution resists (or buffers) a change in its pH. That is, we can add a small amount of an acid or base to a buffer solution and the pH will change very little. How to calculate pH of buffer solution containing both acid and conjugate base? Dissociation constant definition 1.1 can be rearranged into or (note that due to sign change [A-] was moved to nominator). This is so called Henderson-Hasselbalch equation (or buffer...
    969 Words | 6 Pages
  • Preparing Buffers and Buffer Capacity
    Name: Espera, Leza Andrea A. Date Performed: June 25, 2013 Lab partner: Catalan, Christian A. Date Due: July 5, 2013 Date Submitted: July 5, 2013 EXPERIMENT 1 PREPARING BUFFERS AND BUFFER CAPACITY INTRODUCTION A buffer solution is one in which the pH of the solution is "resistant" to small additions of either a strong acid or strong base. Buffers usually consist of a weak acid and its conjugate base, in relatively equal and "large"...
    1,126 Words | 5 Pages
  • Buffer and Buffer Capacity - 1294 Words
    I. Introduction A buffer system is a mixture of a weak acid or a weak base and its salt (conjugate base or conjugate acid, respectively) that permits solutions to resist large changes in pH upon the addition of small amounts of hydrogen ions (H+) or hydroxide ions (OH-). If the same amount of the buffer is added, the pH may only change a fraction of a unit. Our blood is a good example of a buffered system. It is maintained under a pH of 7.4. Thus, buffers are important in many areas of...
    1,294 Words | 5 Pages
  • Chemistry Buffers: Bicarbonate buffers
    Chemistry Buffers: Bicarbonate buffers - what a buffer is - what a Bicarbonate buffer is and how it works - What would happen if Bicarbonate Buffers didn't exsist. Buffers ( I had example diagrams on my word program, but they didn't copy over. You can find these diagrams on the sites listed at the bottom.) A Buffer is a mixture of an acid and its conjugate base, or a Base and its conjugate acid. A Buffer works by reacting with any new strong acid or base added to the mixture of the buffer....
    539 Words | 3 Pages
  • The Properties of Buffers - 383 Words
    Experiment #6 The Properties of Buffers Abstract In this experiment the pH of fours solutions was recorded and identified as acidic, basic, or neutral. A buffer system of 0.10 M ammonium ion (NH4+) and 0.10 M ammonia (NH3). This buffer was made three times: once with equal parts ammonium ion and ammonia, next it was diluted to double the volume, and finally it was prepared with an addition of HCl. The pH was recorded to calculate the Ka and pKa values. The most accurate...
    383 Words | 2 Pages
  • Buffer Systems - 1915 Words
    EXERCISE 2 Buffer System Maganaka, Klimpol C. Group 4 Sec. DEFG-1L July 10, 2013 ____________________ 1A scientific paper submitted in partial fulfillment of the requirements in Chemistry 160.1 laboratory under Prof. Noreen Fundador, 1st sem., 2013-2014. INTRODUCTION Almost every biological process is pH dependent; a small change in pH produces a large change in the rate of the process. Cells and organisms...
    1,915 Words | 9 Pages
  • Buffer Capacity - 831 Words
    Azalia Panizales Date Performed: June 22, 2012 Univ Irgil Silva Date Due: June 29, 2012 Date Submitted: June 29, 2012 Experiment No. 1 Preparing Buffers and Buffer Capacity Abstract The principal objective of the experiment1, Preparing Buffers and Buffer Capacity, is to prepare buffer solutions in different concentrations and to determine their buffering capacity. Each group was assigned to certain concentration 0.1M, 0.2M, 0.3M, 0.4M and 0.5M of the acetate...
    831 Words | 3 Pages
  • Buffers Essay - 2060 Words
    Irresistible? By Mikayla Messing 8/3/12 Section 623 Abstract To examine the effectiveness of buffers by titrating two sets of five different solutions using HCl and NaOH and monitoring the pH change of the various solutions. The data collected shows that the buffer systems made with sodium acetate and acetic acid were effect when titrated with the strong acid and the strong base. Comparison of all the solutions shows that the concepts of buffers holds true for the results from the...
    2,060 Words | 6 Pages
  • Buffer Preparation - 1247 Words
    Buffer Preparation (Gozani Lab) 1. 1 M Tris-HCl Buffers pH Volume (L) TrisBase (g) HCl (ml) pH 7.0 2 242.2 150-155 pH 7.5 2 242.2 120-125 pH 8.0 2 242.2 80-85 Autoclavable. 2. EDTA 0.5 M (pH8.0) 0.5M, 1L: 148 g EDTA + ~30-40 g NaOH to adjust pH (or 186 g EDTA-Na.2H2O + ~20 g NaOH) Note: pH adjusted by NaOH is essential for solubility. Autoclavable. 3. TAE DNA Electrophoresis Buffer (50 X) (2 M Tris, 50 mM EDTA) 2L 484 g Tris 114.2 ml glacial acetic acid 200 ml 0.5 M EDTA 8.0 To...
    1,247 Words | 10 Pages
  • Investigations of Buffers - 991 Words
    CHM 116 Lab Investigations of Buffers I. Purpose The purpose of this experiment was to get an understanding as to how to properly prepare chemical buffers. Also part of this experiment was to gauge the effectiveness of the buffers by measuring their pH levels in various titration solutions, using a pH meter. II. Procedure To start our experiment we had to prepare Buffer B, which was the .060 M Ammonia/Ammonium solution. Using 3.0 M ammonia, we had to...
    991 Words | 5 Pages
  • Chm130 Buffers Lab - 1490 Words
    CHEM 113L EXP# 7: Buffer Preparation and pH Measurements Revised . AMB 7-2005 Introduction: Even in quite dilute aqueous solutions, acetic acid is very slightly ionized (it would approach 99% ionization only as the concentration approaches 0.0 M): HC2H3O2(aq) + H2O(l) Ka = 1.8 x 10-5. H3O+ + C2H3O2- In general, if the acid is not extremely weak, the pH of a solution of a weak acid is governed by the concentration of the acid and Ka. Under similar conditions, the pH of a solution of a weak...
    1,490 Words | 5 Pages
  • Acid Base Buffer Systems
    ACID / BASE BUFFER SYSTEMS Abstract A buffer solution is a solution that contains both an acid and a salt containing the conjugate base / acid in sufficient concentrations so as to maintain a relatively constant pH when either acid or base is added. In this experiment a selection of buffer solutions (Bicarbonate/carbonic acid), Lake water and distilled water were obtained to compare their buffering behaviours when mixed both with an acid and a base. The results showed buffering capacities...
    1,170 Words | 5 Pages
  • Acid-Base Buffers - 2785 Words
    CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds, and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined, resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a...
    2,785 Words | 10 Pages
  • Acids, Bases & Buffers - 1865 Words
    Title: Acids, Bases & Buffers Objectives: 1. To understand the acid-base chemistry. 2. To prepare and evaluate a buffer system 3. To measure the buffering capacity of two types of isotonic drinks. Introduction: There are acid-forming, basic forming and neutral food, however the acid or alkaline properties of a food is unable to judge by the actual acidity of the food itself. For example, citrus fruits such as lemon are acidic, but they are alkaline-forming when we consume and digest it....
    1,865 Words | 10 Pages
  • Hydrogen Phosphate Buffer Systems
    Experiment 8: Hydrogen Phosphate Buffer Systems Purpose The purpose of the lab was to create a buffer solution and observe the capacity of the phosphate buffer system. Also, the experiment was meant to provide experience with the calculations and mathematics involved in creating the buffer solution. Finally, the lab was designed to provide an insight and appreciation for the necessity and complexity of buffers in our physiology and in the environment. Procedure No deviations were made...
    1,129 Words | 4 Pages
  • Ph and Buffers Lab - 1819 Words
    Buffers, and pH, and Diffusion oh my The pH of a solution is the measure of the concentration of charged Hydrogen ions in that given solution. A solution with a pH lower than seven is considered to be acidic. A solution with a higher pH is a base. It is very important for organisms to maintain a stable pH. Biological molecules such as proteins function only at a certain pH level and any changes in pH can result in them not functioning properly. To maintain these constant pH levels, buffer...
    1,819 Words | 6 Pages
  • Acetic Acid and Buffer - 1116 Words
    What is buffer? -A buffer is an aqueous solution that has a highly stable pH. If you add acid or base to a buffered solution, its pH will not change significantly. Similarly, adding water to a buffer or allowing water to evaporate will not change the pH of a buffer. Examples of buffer problems: Problem example 1: The first step involves calculating the proportion and amounts of the two ionic species in the buffer. The buffer contains a total of 10 litres x 0.045 M = 0.45 mole of phosphate...
    1,116 Words | 4 Pages
  • Design and preparation of buffers effective at different pHs
    Experiment 1 : Design and preparation of buffers effective at different pHs Abstract The body uses natural buffers to maintain the many different pH environments in our body. This is important for optimum activity of our enzymes. When doing experiments in vitro using these enzymes it is important to mimic intracellular conditions using artificial buffer systems in order to obtain accurate results. In this experiment the buffering properties of three artificial buffer systems containing...
    1,605 Words | 12 Pages
  • 44 0134 00 01 RPT Using Buffers
     Using Buffers Gino A. Romeo, Jr., Ph.D. Version 42-0134-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this...
    509 Words | 7 Pages
  • Experiment 4: Common-Ion Effect and Buffers
    EXPERIMENT 2: COMMON-ION EFFECT AND BUFFERS MARVILE REA R. FERRER1 1DEPARTMENT OF MINING, METALLURGICAL & MATERIALS ENGINEERING, COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES, DILIMAN, QUEZON CITY 1101, PHILIPPINES DATE SUBMITTED: DECEMBER 13, 2012 DATE PERFORMED: DECEMBER 07, 2012 ______________________________________________________________________________________________________________ INTRODUCTION Monitoring the pH range of a laboratory reaction or a process is very...
    1,344 Words | 6 Pages
  • Amylase vs Starch vs Temp vs Buffers Lab Report
    Amylase Enzyme vs. Starch vs. pH vs. Temperature Taylor Ellsworth Professor Michael Bunch Cell Biology 112 “Effects of Amylase reaction time when breaking down starch.” Experiment Goal: The goal of our experiment was to understand the similarities in digestion by finding out how long it takes for the amylase enzyme, found in saliva, to break down our substrate, starch. Hypothesis: While understanding that starch is broken down by our saliva (amylase enzyme) we predict that the higher...
    1,165 Words | 4 Pages
  • Lab #1 - 408 Words
    Ale_____ Ram___ 30 de noviembre de 2012 _______________ BIOL 3503 Ecología Laboratory #1: Communities and Biomes 1. List the fish and invertebrates you selected after the nitrogen cycling process. I personally selected a maroon clownfish with two anemones. I also chose 5 sergeant majors, 2 bleenies and a yellow tang. 2. What changes did you make to your reef tank during the 12 weeks and why did you make them? After I selected my fish, I noticed that the...
    408 Words | 2 Pages
  • The Effect of Substrate Concentration, Enzyme Concentration, Ph and Temperature on Enzyme Activity”
    Title: “The Effect of Substrate Concentration, Enzyme Concentration, pH and Temperature on Enzyme Activity” Abstract: In the following experiments we will measure precise amounts of potato extract as well as Phenylthiourea, combined with or without deionized water and in some instances change the temperature and observe and record the reaction. We will also investigate the different levels of prepared pH on varying samples of the potato extract and the Phenylthiourea and record the results....
    1,379 Words | 5 Pages
  • Synthesis of Acetophenetidin by Amide Synthesis
    The goals of this experiment are to determine if the products derived from amide synthesis and Williamson Ether Synthesis are identical, and if one of the synthetic routes is more advantageous than the other. In Part 1, an attempt to synthesize acteophenetidin crystals by amide synthesis was made. We began by removing the colored impurities from the p-Phenetidine (reddish-brown) by placing 2g of the sample in 38 mL of hydrochloric acid and heating the solution to boiling point. Upon reaching...
    291 Words | 1 Page
  • Beer-Lambert Law - 557 Words
    Beer-Lambert Law Gabe Garrison & Paige England Buffalo High School Abstract In this lab, the Beer-Lambert Law is tested by using a spectrophotometer. This is a quick and easier way to determine the concentration of a solution. Keywords: Beer-Lambert Law, Spectrophotometer, concentration Beer-Lambert Law The Beer-Lambert-Law states that...
    557 Words | 3 Pages
  • Lab Paq Biology Lab 7
    Cell Structure and Function: Tonicity and pH Justin HeshizerBIOL 1107K (80561) 50 Experiment Number 5 10/02/14 Margaret E. Vorndam, M.S. Version 42-0038-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in...
    1,144 Words | 5 Pages
  • The Factors Affecting the Lytic Activity of Lysozyme
    FACTORS AFFECTING THE LYTIC ACTIVITY OF LYSOZYME' A. N. SMOLELIS" AND S. E. HARTSELL Laboratories of Bacteriology, Department of Biological Sciences, Purdue Univer8ity, Lafayette, Indiana Received for publication October 28, 1951 Since the initial discovery of lysozyme by Fleming (1922), nuimerous attempts have been made to describe the properties of this enzyme. The absence of a reliable method for the determination of enzymatic activity, however, has contributed to the incompleteness...
    4,012 Words | 18 Pages
  • User Guide Ekomilk - 9332 Words
    EON TRADING LLC USA www.eonbg.com ; e-mails: eonbg@eonbg.com ; todorov@eonbg.com ; todorov@sz.intg.bg EON Trading LLC , USA, State of Dalaware,701 Renner ROAD, Wilmington, Delaware 19810, Country of New Castle. BULGARIAN OFFICE - Industrial Area, STARA ZAGORA; Tel./Fax:(359 42) 603 449; 62 60 19; Tel. (359 888) 714 711; EKOMILK® ULTRASONIC MILK ANALYZERS OPERATING INSTRUCTIONS MODELS □ EKOMILK MEASURING CYCLE POWER CONSUMPTION measurements per hour max 15-18 30 W 20-25 30 W 30-35 30...
    9,332 Words | 49 Pages
  • Lab techniques - 794 Words
    Treatment of Results 1) What is the role of 0.25M sucrose as the medium for the fractionation process? Cold sucrose does not chemically react with cell organelles Due to the density and size of sucrose molecules, it is able to suspend pellets for configuration while providing a solution where the centrifugation can be better balanced Sucrose offers a liquid medium in which less dense fractions can be poured off as supernatant at the end of each centrifugation step. 0.25M sucrose...
    794 Words | 6 Pages
  • Irresistible Lab Report Chem 109
    Abstract A buffer is a solution that resists changes in pH when H+, OH-, or H20 is added. By using standard lab equipment, a lab pro diagnostic tool, and acidic and basic solutions, the pH can be found. By recording the pH while adding a base or an acid gradually to a buffer solution you can find the capacity of each buffer to resist drastic changes in pH. The best buffers will keep a solution from becoming either too acidic or basic with the addition of a strong base or acid. Introduction...
    1,297 Words | 4 Pages
  • Chemistry Investigatory Project - 3156 Words
    CHEM. RES. CHINESE UNIVERSITIES 2012, 28(3), 415—418 Determination of Nicotine in Tobacco by Capillary Electrophoresis with Electrochemical Detection SUN Jin-ying1, XU Xiao-yu1,2, YU Huan1 and YOU Tian-yan1* 1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China; 2. Ministry of Public Security of Jilin Province, Changchun 130051, P. R. China Abstract A sensitive, simple and low-cost method...
    3,156 Words | 11 Pages
  • zagam - 704 Words
    Objective: Learning how to Prepare Buffers of Various pH levels and Preparation of Acetate Buffer. Introduction A buffer is a solution having the capacity to resist changes in pH levels. Mostly a buffer consists of a weak acid and a salt of strong base or a weak base and a conjugate salt of strong acid e.g. acetate buffer is the most common buffer in which equimolar mixture of acetic acid and sodium acetate solution is used. CH3COOH CH3COO - + H+ CH3COONa CH3COO - + Na+ Buffers...
    704 Words | 4 Pages
  • Acid Base Equilibria and Solubility Equ
    August 28, 2009 [PROBLEM SET FROM R. CHANG TEST BANK] Chapter 16 Acid-Base Equilibria and Solubility Equilibria Student: ___________________________________________________________________________ NOTE: A table of ionization constants and Ka's is required to work some of the problems in this chapter. 1. In which one of the following solutions will acetic acid have the greatest percent ionization? A. B. C. D. 2. Which one of the following is a buffer solution? A. B. C. D. E. 3. 0.40 M HCN...
    4,694 Words | 42 Pages
  • Beetroot cell membranes - 969 Words
    Control process Beetroot samples: The same size beetroots will be used throughout the experiment this is to ensure that the impact of the temperature on every sample will stay the same, i.e. if having a bigger beetroot sample less pigments will be released into the test tube at lower temperature, or having a smaller beetroot sample more pigment will be released into the test tube. This error will change the results of the experiment at large. Therefore it is important to insure the sample sizes...
    969 Words | 5 Pages
  • Amylase - 661 Words
    Investigating the effect of pH on amylase activity This practical allows you to: * discover how pH affects the rate of an enzyme controlled reaction * evaluate the experimental procedure Procedure SAFETY: Follow your teacher’s instructions for handling the solutions. Wear eye protection when handling the iodine solution. Investigation * Place single drops of iodine solution in rows on the tile. * Label a test tube with the pH to be tested. * Use the syringe to place...
    661 Words | 3 Pages
  • Lab Protocol - 290 Words
    Tuesday McClain Pat Mobley Colombe Mongbo Alyson Lowery Enzyme Lab Protocol Hypothesis: The rate of decomposition of .15M NaCl at a pH of 8 is dependent on temperature. Prediction: The highest amount of decomposition will occur at 37 degrees Celsius. Rationale: The use of the enzyme at 37 degrees Celsius will be the most favorable because that is its natural habitat. Independent Variable: The different temperatures- 25,37, and 49 degrees Celsius. Dependent Variable: Rate of...
    290 Words | 1 Page
  • Salivary Amylase - 754 Words
    Joanne Kathleen Saori T. Suzuki, Laurent Santos, Val Justin D.M. Tongco* College of Science, University of Santo Tomas, Manila Philippines Abstract Salivary amylase, found in humans, is enzyme that catalyzes the hydrolysis of starch into simpler compounds. Its enzymatic activity is affected by several factors, such as temperature and pH. The rates of enzymatic activity of salivary amylase in different temperatures and pH were measured and resulted to be very near 50 C and 7 respectively....
    754 Words | 3 Pages
  • The Effects of Ph and Concentration Levels on Catecholase
    Abstract This lab was performed in order to discover the activity of the enzyme catecholase in different pH levels as well as its absorbance in differently concentrated solutions. A spetrophotometer was used to measure the absorbance of the enzyme catecholase in different pH solutions as well as to measure the absorbance of catecholase in solutions with different concentrations of potato juice and phosphate buffers. Absorbance of the enzyme catecholase was at an optimum level when pH was...
    1,267 Words | 5 Pages
  • Effect of Ph on Green Pea Germination
    Effect of pH on Green Pea Germination Objective: To determine how pH affects the germination of green peas and to examine the degree of germination within each pH level. We will do this by using various buffer solutions (along with distilled water) to grow green peas. Hypothesis: We expected that the group of peas that encountered a pH of 7 to have the most and highest degree of germination. Materials: tap water buffer solutions pH 3,5, 7, 9,11...
    538 Words | 4 Pages
  • Atomic Orbital and Calculate Oxidation Number
    Q1-Q8 (1MARKS EACH) Q9-Q18 (2MARKS EACH). Q19-Q27 (3 MARKS EACH) Q28-Q30 (5 MARKS EACH) …………………………………………………………….. Q1. State law of constant composition. Q2. Howe 0.5m of NaOH different from 0.5M ofNaOH? Q3. State Heisenberg uncertainity principal. Q4. Write general electronic configuration of d-block elements. Q5. Define Resonance. Q6. What is compressibility factor? Q7. Define Buffer solution? What is common ion effect? Q8. What is Demineralised water? Q9. Calculate the...
    664 Words | 3 Pages
  • The Effect of Enzyme Concentration on Rate of Reaction
    OBJECTIVE: The experiment was carried out to investigate the effects of the increase in the enzyme concentration on the rate of reaction. By using self investigative and experimental skills, the experiment was done in order to determine how the rate of reaction will be altered, whether it will increase, decrease or remain constant when the different concentration of enzymes added. INTRODUCTION: Enzymes are produced naturally in plant, animal, and microbial cell. There are thousands of...
    2,632 Words | 9 Pages
  • Starch Hydrolysis by Amylase - 1389 Words
    Experiment 2: Starch Hydrolysis by Amylase Theoretical Background Polymers of carbohydrates are called polysaccharides, and make up some of the most important naturally occurring compounds [1]. They have thousands of monosaccharide units linked to each other by oxygen bridges. They include starch, glycogen, and cellulose, all three of which yield only glucose when completely hydrolyzed [2]. A B Figure 1. Starch (amylose) (A) and cellulose (B)...
    1,389 Words | 6 Pages
  • Enzymatic Activity of Salivary Amylase
    Enzymatic Activity of Salivary Amylase Ong, Janela Rose I.; Paguia, Maria Tricia C.; Placente, Dax Daven A.; Posadas, Grace Catherine A. 3Bio3-Group 8 Department of Biological Sciences, College of Science University of Santo Tomas, España, Manila 1008 Abstract This experiment aims to examine the enzymatic activity and specificity of salivary amylase depending on the changes in pH and temperature; and determine the optimum temperature and pH of the amylase. EXPERIMENTAL...
    619 Words | 2 Pages
  • Lab Report - 2214 Words
    Research Question How will the addition of different pH buffers to amylase affect the rate of starch digestion measured using starch and iodine? Introduction Amylase is an enzyme found in human saliva and pancreas. It is the digestive enzyme that is needed to breakdown starch molecules. Amylase must be kept at certain conditions to function at its optimum level. This experiment will explore the effect of pH (1, 4, 7, 10, and 14) on the function of amylase by using starch and iodine....
    2,214 Words | 8 Pages
  • Factors Affecting Enzyme Activity
    How is pH affecting catalase activity? Hypothesis The catalase activity is assumed to be the most active in pH7. The higher or lower concentration away from the optimum pH of catalase, the slower the rate of activity is. Data Collection & Processing I collected the results of pH4, pH7, pH10 and pH13 after 2 minutes, and I repeated the experiment 3 times. Below is a table to show the results, their averages and standard deviations: | 1st time (sec) | 2nd time (sec) | 3rd time...
    582 Words | 2 Pages
  • Modern Supply Chain Management
    Topic: Demand Driven MRP 21st Century Supply Chains Require New Demand Driven Rules and Tools A white paper by the Demand Driven Institute April 2011 www.demanddriveninstitute.com The Demand Driven Institute (DDI) was founded by Carol Ptak and Chad Smith, co‐authors of Orlicky’s Material Requirements Planning, Third Revised Edition in order to proliferate and further develop demand driven strategy and tactics in industry to enable a company to transform from “push and promote” to ...
    3,119 Words | 11 Pages
  • The Effects of Ph in Beano - 466 Words
    The Effects of pH in Beano Introduction: The enzyme my experiment was conducted from was Beano. Beano is a dietary supplement which is used to reduce gas in the digestive system and is enzyme based. The question that my group was trying to answer is “At what pH is Beano most effective?” Our hypothesis was “If Beano solution is placed in the 6 pH buffer, than it will work more efficiently.” Methods and Materials: Two Beano tablets were grinded into a fine powder and then 10ml of water...
    466 Words | 2 Pages
  • Plant Lab Report - 1617 Words
    Introduction Acid rain refers to a phenomenon in which "[precipitation] from the atmosphere [contains] higher than normal amounts of nitric and sulfuric acids". The precipitation that results in acid rain comes from the pollution emitted by human activities, such as factories, electrical power plants and automobiles. Two main pollutants are sulfur dioxide (SO2) and nitrogen dioxide (NO2), which reacts with substances in the atmosphere, such as water and oxygen, to form acid rain. While rain...
    1,617 Words | 6 Pages
  • Fibromyalgia Research - 9397 Words
    An Evaluative Study of Operation Grouping Policies in FMS Abstract The increased use of flexible manufacturing systems to provide customers with diversified products efficiently has created a significant set of operational challenges for managers. This technology poses a number of decision problems that need to be solved by researchers and practitioners. In the literature, there have been a number of attempts to solve design and operational problems. Special attention has been given...
    9,397 Words | 27 Pages
  • Chem 18.1 Experiment 5 Fwr
    Experiment 5 COMMON ION EFFECT MALUBAY, Justin Damian PADRILLAN, Hazel Rose CD2, Group 5 Ms. Sarah Sibug 6 April 2013 ------------------------------------------------- ------------------------------------------------- I. ABSTRACT The common ion effect occurs when a given ion is added to an equilibrium mixture that already contains that ion, and the position of equilibrium shifts away from forming more of it. This paper is a follow-up of the experiment which aims to determine the...
    2,367 Words | 7 Pages
  • Engineering Lab Report - 1831 Words
    CONTENTS Executive Summary 2 1. Introduction 2 2. Equipment and Materials 2 2.1 Equipment and Materials for Optimum Alum Dosage Determination 2 2.2 Additional Materials for Optimum pH Determination 3 3. Procedures 3 4. Results 4 5. Discussion of Results 6 6. Conclusions 7 7....
    1,831 Words | 15 Pages
  • Expt 5 Common Ion Effect
    EXPERIMENT NO. 5 COMMON ION EFFECT Lopez, Pauline G. HIJ-2, Group No. 5, Ms. Jervee M. Punzalan Ramales, Ayane Mark Q. September 15, 2014 I. ABSTRACT The common ion effect involves how the solubility of a salt changes when some ion that is common to both added substance and the salt in question is introduced. The presence of a common ion hinders the ionization of a weak acid or a weak base hence this is known as the common ion effect. Simply put, the...
    1,893 Words | 8 Pages
  • Chem Ii Study Guide
    Multiple Choice: (42 points) Chapter 15: Principles of Chemical Equilibrium dynamic equilibrium equilibrium constant reversibility LeChâtelier’s Principle ICE table Q and Keq major species minor species Keq,f vs Keq,r rate constant vs. equilibrium expressions significance of magnitude of Keq equilibrium shift with concentration changes equilibrium shift with temperature changes equilibrium shift with volume changes Chapter 16: Acid-Base...
    558 Words | 4 Pages
  • hydrolysis of salt - 2307 Words
    ABSTRACT The knowledge about acid and base in one of the fundamental branch in chemistry. According to the Brønsted-Lowry theory definition, acid is a substance capable of donating a proton while base is a substance that capable of accepting proton. Every Brǿnsted acid has a conjugate base and every Brǿnsted base have a conjugate acid. In this experiment, students will be introduced to the concept of hydrolysis, acid-base indicator and the behaviour of buffer solutions. The epxriment is...
    2,307 Words | 11 Pages
  • Catalase activity in potato - 2534 Words
     Investigation into how pH levels affect Catalase activity in potato samples – (enzymes) Introduction: The aim of this investigation is to understand and monitor the effects pH levels have on catalase activity within controlled potato samples. Catalase is a type of enzyme that is found widespread among organisms that grow in the presence of oxygen (almost all living things) its specific use is to speed up the decomposition of Hydrogen peroxide (H2O2) within cells. Hydrogen peroxide...
    2,534 Words | 12 Pages
  • 2046 Exam 2 Form Code A
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