Qualitative analysis lab procedure

Vance1 Grossmont College 8800 Grossmont College Dr. El Cajon, CA 92020 Prepared for printing on May 26, 2016 1. Original material by, Bill Bornhorst, Bill Givens, Jeff Lehman, John Maley, John Oakes, and Chuck Park 16-0027-170 Contents EXPERIMENT 1 The Kinetics of the Dissociation of Hydrogen Peroxide 7 Introduction 7 The Experiment 9 Calculations 12 Post Lab Questions 13 EXPERIMENT 2 A Kinetic Study of the Oxidation of an Alcohol by Dichromate Ion 15 Introduction 15 Procedure using SpectroVis 18 Procedure using Spectronic 20 19 Sample Notebook Page 20 Calculations 20 Post Laboratory Questions 21 EXPERIMENT 3 Determination of Ka, Kb, and % Ionization from pH 23 Background 23 Procedure 25 Chemistry 142 Grossmont College i-1 Contents EXPERIMENT 4 pH Indicators 29 Introduction 29 Determination of the Ka of an Indicator Calculations and Results 32 EXPERIMENT 5 Titration Curves 30 33 Objective 33 Procedure 33 Data Analysis 35 EXPERIMENT 6 The Solubility Product of Calcium Iodate 37 Introduction 37 Procedure 39 Calculations 39 Pre-Laboratory Questions Post Lab Questions 43 EXPERIMENT 7 Solubility Product and Potentiometric Titrations 45 Introduction 45 Procedure 48 Calculations 50 Post Lab Questions EXPERIMENT 8 41 51 Analysis of a Cation Mixture 53 Objective 53 Introduction 53 General Techniques 55 Experimental Procedure 55 Observations and Data 58 Post Lab Questions 61 EXPERIMENT 9 Group I Cations: The Silver Group 63 Introduction 63 Experimental Procedure: Analytical Group I 65 Data and Calculations 66 Post Lab Questions 67 i-2 Chemistry 142 Grossmont College Contents EXPERIMENT 10 Cation Group II: The Acid-Insoluble Sulfides 69 Introduction 69 Procedure 72 Post Lab Questions EXPERIMENT 11 Cation Group III: The Basic Insoluble Sulfides 77 Introduction 77 Procedure 81 Post Lab Questions EXPERIMENT 12 75 83 Anion Analysis 85 Introduction 85 Experimental Procedure - Preliminary Tests 87 Experimental Procedure - Specific Tests 88 Post Lab Questions 91 EXPERIMENT 13 Five Solution Analysis 95 Introduction EXPERIMENT 14 95 Qualitative Analysis: General Unknown 99 Objective 99 Introduction 99 Procedure 99 Results 100 EXPERIMENT 15 Determining the Identity of an Unknown Solution 101 Introduction 101 Prelaboratory Questions 103 Procedure 105 Post Laboratory Question 107 EXPERIMENT 16 Electrochemistry 109 Objective 109 Galvanic (Voltaic) Cells 109 Chemistry 142 Grossmont College i-3 Contents Electrolytic Cells 113 Concentration Cells 115 Questions and Data Interpretation EXPERIMENT 17 Electrochemical Cells (B) 131 Procedure EXPERIMENT 18 131 Corrosion 133 Objectives 133 Introduction 133 Procedure 134 Data 136 Data Interpretation 137 Post Laboratory Questions EXPERIMENT 19 119 140 Ligand Substitution 141 Objective 141 Introduction 141 Procedure 143 Data Treatment 146 Post Lab Questions 149 EXPERIMENT 20 First-Order Radioactive Decay 151 Introduction 151 The Experiment 152 Results 152 Post Lab Questions 153 EXPERIMENT 21 Synthesis of Aspirin 155 Objective 155 Introduction 155 Procedure 156 EXPERIMENT 22 Chemical Equilibrium using Vernier 159 Objective 159 Introduction 159 Procedure 161 Data Interpretation i-4 162 Chemistry 142 Grossmont College Contents Index 163 Chemistry 142 Grossmont College i-5 Contents i-6 Chemistry 142 Grossmont College EXPERIMENT 1 The Kinetics of the Dissociation of Hydrogen Peroxide Introduction Kinetics is the study of the rate of chemical reactions. The study of kinetics is a key aspect of chemistry because it provides a great deal of insight into the step-by-step mechanism by which chemical reactions occur.