Chem Lab 2 - 1 CHEM 107-538 February 6, 2008 Experiment 2:...

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CHEM 107-538 February 6, 2008 Experiment 2: Aqueous Solutions and Solution Stoichiometry SUMMARY The purpose of this experiment was to learn about what types of ions and molecules are present in solutions. This was done through observing the conductivity of an acid base reaction. The results of these observations allow one to classify solutions as strong or weak electrolytes or as non-electrolytes. A probe connected to a computer allowed us to find the conductivity of the given chemicals in Part A. Part B consisted of a titration experiment also using the probe to find the conductivity. During Part B a stir bar was placed into a beaker filled with 70 mL Ba(OH)2. H2SO4 was added until the equivalence point was found. RESULTS Part A Compound Conductivity (micro Siemensper per centimeter, μS/cm) NaCl 1060 CaCl2 850 CH3COOH 143 HCl 2960 CH3OH 67 H2O (distilled) 67 H2O (tap) 191 Part B See attached data sheets GRAPHS AND CALCULATIONS Part B: Equivalence Point = (trial 1) 8.02mL (trial 2) 8.05mL
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This note was uploaded on 04/27/2009 for the course CHEM 107 taught by Professor Generalchemforeng during the Spring '07 term at Texas A&M.

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Chem Lab 2 - 1 CHEM 107-538 February 6, 2008 Experiment 2:...

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