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 The objective of the Irresistible lab is to determine the capacity of each
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Irresistible? By Elizabeth Potter December 5‚ 2012 Lab Section 503 Abstract The over all goal of the Irresistible lab was to verify a buffer’s ability to resist changes in pH with consecutive 1mL additions of either a strong acid (HCl) or base (NaOH). The experiment entailed preparing a combination 10 buffered and non-buffered solutions and then monitoring the pH changes as a strong acid or base was added to the solution. By performing this experiment‚ it was found that with increasing amounts
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| | Kinetics Author: Katie Wood Instructor: Donald Kavanagh Chem 106b‚ Section 001 Lab Performed 8th‚ 2012 Lab Report Submitted February 22nd‚ 2012 Abstract The purpose of the lab was to determine the order of reaction for the dye Red #40. By measuring the reaction rate between bleach and the dye‚ the order of the reaction was determined to be first order. Introduction The study of kinetics is important for studying the amount of time it takes for a particular reaction to reach
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A. Goal and Purpose: Session 1: In this lab‚ we will achieve a simple Friedel-Crafts alkylation of anthracene. The choice of anthracene as an aromatic substrate stems from two considerations. First‚ there is a question of regioselectivity. Second‚ anthracene and its derivatives are highly visible under UV light. Session 2: In this lab‚ we will complete a partial conversion of 9-acetylanthracene using m-chloroperoxybenzoic acid (mCPBA). We will also determine by NMR‚ the regiochemistry of the
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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Objectives: 1. To identify the relative densities of some common liquids and solids. 2. To determine the densities of water‚ an unknown liquid‚ a rubber stopper‚ and an unknown rectangular solid. 3. To determine the thickness of a piece of aluminum foil using the density concept. 4. To practice proficiency in performing the following experimental procedures: pippeting a liquid‚ weighing by difference‚ and determining a volume by displacement. Apparatus: Tall glass cylinder‚ glass marble‚ rubber
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tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure: 1) Preeminently‚ follow all laboratory safety guidelines ensuring that you have safety goggles on at all times throughout the lab. 2) Fill the cuvette 2/3 of the way with water. 3) Select the appropriate wavelength on the spectrophotometer. 4) Place the cuvette in the spectrophotometer and click the calibrate button. 5) Put 5mL of stock solution into test tube. 6) Fill
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S.4Chemistry 2nd Term Project Be a Chemical Analyst-Analysis on ethnoic acid. Objective This experiment aims at determining the percentage by mass of ethanoic acid(CH3COOH) in a commercial vinegar using titration method. Chemical reaction involved: CH3COOH(aq) + NaOH(aq)→ NaCH3COO(aq) + H2O(l) Apparatus: An electronic balance‚ a 10.0cm3 pipette‚ a 25.0cm3 pipette‚ a pipette filler‚ a 250.0cm3 volumetric flask‚ a burette‚ stand and clamp‚ a conical flask‚ a white tile‚ 3 large beakers‚
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Synthesis Procedure 1 -1.0 Introduction A Cobalt-Amine-Halide compound is synthesized from cobalt (II) chloride hexahydrate. An orange-tinted solid is produced and is considered to be unknown since the specific ligand amounts are unknown. By determining the percent composition of various elements and compounds in the unknown‚ its true identity can be predicted. Chloride‚ ammonia‚ and cobalt are three examples of percent compositions determined to help narrow the selection of possible unknowns
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Deborah Bell April 17‚ 2012 Chemistry 1212K Lab Synthesis Report Introduction In this Chemistry Lab the main objective is to perform accurate chemical analysis for the quantity of elements and compounds in a sample. There will be a compound made then synthesized. The methods used were acid-base titrations‚ redox titrations‚ gravity filtration‚ and distillation. General conclusions included Procedures Weight of Crucibles 1. The first experiment is Preparation of a Cobalt Amine
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