Ph Lab Report

Better Essays
Topics: PH
The different methods of measuring acids and bases in a solution
By Starsky
Intro to Biology
September 26, 2011 Lab Partners: Kristen, Tania and Betty Introduction

When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best results when testing the pH within a solution. The pH, which stands for the proportion of hydrogen ions in a solution, could be acidic (acidosis), neutral or basic (alkaline). The pH scale goes from numbers 1 through 14. A pH of 7 is neutral; meaning the amount of hydrogen ions and hydroxide ions is equal, just like water.
An acid is an ionic compound that gives off hydrogen ions into a solution. An ionic compound is the result of an ionic bond, which are formed after atoms transfer electrons to achieve full outermost energy levels or orbits. Bases are ionic compounds that give off hydroxide into a solution or accept hydrogen. Buffers are what keep them at bay by using weak acids to maintain the pH levels. By using a pH paper, indicator dyes and a pH meter, several tests will be conducted to check which one will result in a precise pH level reading.

Materials and Methods

Ph Paper.
Get 5 beakers and label them A through E. Fill the beakers with 20 to 25 milliliters of the appropriate solutions and then cut a piece of pH paper at least one inch in length. Dip the pH paper into the solution and color coordinate with the pH chart it provides. Using indicator dyes. Get 2 sets of test tubes and the label them A through E. Fill the tubes with equal amounts of solution and then in only the first set of tubes, place 2 drops of Bromothymol Blue dye into each and make sure it mixes in well with the solutions. On the second set of tubes do the same but this time



References: Enger, D. E & Ross, C. F & Bailey, B. D (2011). Acids, Bases and Salts. Concepts of Biology. 14th Edition. Pg.34. Siegfried, R. D & Kratz, F. R (2010). “Ph”iguring out the pH scale. Biology for Dummies. 2ndEdition. Pg.42. ****Need help with citation of book reference and lab report.*********

You May Also Find These Documents Helpful

  • Good Essays

    PH lab report

    • 568 Words
    • 5 Pages

    Ph Lab Report Bryon Kim 12­30­13 B(2) Biology Background information/Research PH paper (litmus paper) determines how acidic or how basic a substance is. The paper changes color accordingly to color code on the pH scale. The pH scale starts from 0 to 14. The lower the number the more acidic it is. Zero is the most acidic, and 14 is the most basic while 7 is the neutral number for example water. Examples of an acid is lemon juice or multi purpose cleaner. Examples of a basic substance is shampoo or liquid soap…

    • 568 Words
    • 5 Pages
    Good Essays
  • Good Essays

    pH Lab Report

    • 617 Words
    • 3 Pages

    concept and meaning of pH 2. Provide the student experience in measuring pH a. pH testing paper 3. Test the student’s hypothesis as it related to the pH of common solutions Hypothesis The pH of the tested solutions will be in the order of the following according to a pH scale: 1. Lime juice 2. Orange juice 3. Soda 4. Iced Tea 5. Milk 6. Water 7. Soapy water Material Required To facilitate this laboratory exercise, the experimenter needs the following: pH strips Sample reservoirs…

    • 617 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Ph Levels Lab Report

    • 1444 Words
    • 6 Pages

    Lab on pH Levels Purpose: Throughout this experiment we are trying to learn how to take proper pH measurements using a pH meter. We also want to see the pH of different common liquids and record the change in pH when we add acids and alkaline liquids. The last reason we are conducting this experiment is to explain and show how fresh milk spoils by the change in pH. Materials: In this experiment we used graduated cylinders and glass beakers and added variety of ingredients including 50 mL of; soda…

    • 1444 Words
    • 6 Pages
    Good Essays
  • Better Essays

    Ph Level Lab Report

    • 638 Words
    • 3 Pages

    Distinction of pH levels of Orange Juice and Milk of Magnesia in comparison to Distilled Water Cooper, A., Do, J., Francois, F., Olaleye, O. Lab Section LA: 06/20/2012 Introduction pH is the measurement of the concentration of hydrogen ions in a certain solution. Solutions or substances that have a higher concentration of hydrogen ions are considered acidic on the pH scale. Therefore, a solution with low concentration of hydrogen ions is basic on the pH scale. The pH scale is a universal means…

    • 638 Words
    • 3 Pages
    Better Essays
  • Better Essays

    Ph Levels Lab Report

    • 881 Words
    • 4 Pages

    The relatively close pH levels of Tap Water, Spring Water, Flavored Water, and Seltzer Water. Introduction This experiment was performed to investigate the following hypothesis: The following four different types of drinking water (spring water, seltzer water, tap water, and flavored water) we test will relatively have the same pH level. Our group decided to test different types of drinking water to see if a pH level of tap water is comparable to other types of water. Many people believe…

    • 881 Words
    • 4 Pages
    Better Essays
  • Satisfactory Essays

    lab and ph

    • 543 Words
    • 3 Pages

    pH and Chromatography Lab Report Kevin Rivera Biology Mr. Langley 2C 10/7/13 Introduction In this lab, of pH and Chromatography, in the pH aspect of the lab we are trying to figure out the pH level of certain chemicals by writing down of known solutions to find the type of unkown solution using pH standards. In the Chromatography, we are trying to separate the chemicals using water and a piece of paper. Methodology Materials: Safety Goggles pH indicator & pH indicator key…

    • 543 Words
    • 3 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Enzyme and Ph Lab Report

    • 334 Words
    • 2 Pages

    pH & Enzyme Action Aim: To inspect the effects of the pH on enzymes. Apparatus: 100 cm³ Beaker 3 – 5cm³ Syringes 2 Test Tube Racks with 8 Test Tubes Stop-watch Ruler Dropping bottle of detergent Marker Pen Masking Tape 400cm³ Hydrogen Peroxide 200cm³ Liver Catalase Solution 100cm³ of following Buffer Solution – pH5 pH7 pH9 pH11 Method: The materials were collected. The test tube rack one with 4 test tubes had been labelled A to D. The 2cm³ of each buffer solution…

    • 334 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    PH Lab

    • 1633 Words
    • 7 Pages

    Lab Report: Purpose: The Objective of this lab was to learn how to measure the pH (or acidity) of commonly known fluids, using the correct tools and procedures. To then use that data to document the changes noticed when mixing those same fluids and changing their respective pH levels. Materials: In order to conduct this experiment several pieces of equipment and other materials were needed. The first item was a graduated cylinder, which was used in order to measure out the precise…

    • 1633 Words
    • 7 Pages
    Good Essays
  • Good Essays

    PH lab

    • 779 Words
    • 3 Pages

    Question 1 Critique Dr. Honeydew’s report. Specifically, discuss what is missing and how the missing information should have been presented. First the PH measurements, Dr. honey dew does not explain how the PH device was calibrated or if the blood sample was added or mixed with anything prior to the measuring of the pH (like water, etc.). In regards to the absorption spectroscopy, the method by which the concentration was obtained is questionable. Was the concentration known before the experiment…

    • 779 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Ph Lab

    • 591 Words
    • 3 Pages

    Introduction: The purpose of this lab was to take a variety of solutions and test their pH. Due to materials available pH strips were the only testing tools available. A table is setup to compare the strip color to its pH level. Four known solutions including bleach, lemon juice, soda, and baking soda were used. There was also an unknown solution in which the pH level was used to determine which solution it was. The pH scale is 1-14, a pH of 7 is neutral, less than 7 is acidic, and greater than…

    • 591 Words
    • 3 Pages
    Satisfactory Essays