Oxidation Reduction Titrations: The Indirect Iodimetric Analysis Ascorbic Acid Unknown Number 69 I: Purpose: To determine the percent weight of Ascorbic Acid in unknown sample. This was to be done by the means of an indirect iodimetric analysis. In an iodometric analysis‚ the oxidizing agent can be determined by a different means than titrating directly with standard iodide‚ because a high concentration of I- is needed to form the I3- complex. In this type of analysis‚ excess iodide is added to
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reaction Research question: To what extent does the concentration of hydrochloric acid affect the rate of the following reaction: 2 HCl(aq) + CaCO3(s) → CaCl2(aq) + H2O(l) + CO2(g) Data Collection and Processing: Table1: Different volumes of Co2 gas produced by Different concentrations of HCL acid. Volume of CO2gas formed from 5 different concentrations of HCL acid ±0.5ml 5 different concentrations of HCL acid (Mol) ±0.5ml Time (sec) ±0.1 0.25mol 0.50mol 1.0mol 1.5mol 2.0mol 0.00 0.00 0.00 0.00
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Experiment 5 The Quantitative Determination of an Acid in Carbonated Beverages Thomas Canfield Kelly Caddell Chemistry 144B T.A. Brock Marvin 15 October 2012 Methods: Two sodas containing citric acid were investigated in this experiment. Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods
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Lab Report: Acid-Base Titration Brianna Morrison Chemistry 111 October 11‚ 2010 Aim: To standardize a solution of the base sodium hydroxide using oxalic acid dihydrate as primary standard acid. Also to determine the amount of sodium hydroxide it takes to titrate a weighted sample of an unknown acid. Procedure: As outlined in instructions provided‚ no changes were made to the procedure. Data: Part A: Trial 1: Amount of H C O 2H O: 0.96 g Buret before titration: 3.6
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Abstract Our study is entitled “The Feasibility of Aspartic Acid found in Oyster Shells as an additive ingredient in improving the absorbency of commercialized sanitary napkins.” The objective of the study was to extract a protein from the oyster shells to produce aspartic acid which can replace the manufactured polymer found in commercialized sanitary napkins. The significance of our study is that the product is an alternative in producing polymers. It is also environmental friendly; biodegradable
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Chamberlin Date: 29 April 2017 Experiment Title: Acid-Base Titration Abstract: Vinegar is a common household item containing acetic acid as well as some other chemicals. This experiment is designed to determine the molar concentration of acetic acid in a sample of vinegar by titrating it with a standard solution of NaOH. CH3COOH(aq) + NaOH(aq) -> CH3COONa(aq) + H2O(l) By adding the sodium hydroxide‚ which is a basic solution‚ to the acetic acid‚ which is an acidic solution‚ a neutralization
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Acid Attack 4 women in their early 20s were attacked by a 41 year old mentally unstable woman. On September 18‚ 2017 there was an acid attack at the train station in Marseilles. ( Which is in southern France). The women that were attacked by acid are Courtney Siverling‚ Charlotte Kaufman‚ Kelsey Kosten‚ and Michelle Krug. The kind of acid that was used was hydrochloric acid. The hydrochloric acid was brought in a DIY store and was sprayed form a spray canister. They were attacked by a mentally
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Introduction Background Information To begin a discussion about acid-base titrations‚ we must first recall that there are several definitions of acids and bases. For the purpose of this exercise‚ we will consider the Arrhenius definition of acids and bases‚ in which an acid is a proton (H+) donor and a base produces hydroxide (OH-) in solution. When an acid reacts with a base‚ the products of this reaction are water and a salt. Note that salt here does not only mean table salt (NaCl)‚ but can refer
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Isolation and Characterization of Maize Acid Phosphatase | BCHM 405 | Aaron BANESEH 10307275 | Table of Contents 1 Table of Contents 2 2 Introduction 4 3 Experimental Procedures 5 3.1 Sample preparation 5 3.2 Initial Extraction of Acid Phosphatase 5 3.3 Determination of Protein Concentration by the Folin-Lowry Assay 5 3.4 Specific Activity Assay 6 3.4.1 Definition of Enzyme Unit and Specific Activity- 6 3.5 Determination of pH Optimum 6 3.6 Determination of
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Describe the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells’ abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis. Glucose is a source of energy that is metabolized into glycolysis to pyruvate yielding ATP. To become more efficient‚ pyruvate must be oxidized into carbon dioxide and water. This combustion of carbon dioxide and water to generate ATP is called cellular respiration (Tymoczko‚
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