Experiment 5 Lab Write Up Stoichiometry

Experiment 5 Lab Write Up Stoichiometry - Date Perform:...

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Date Perform: 9/24/07 Name: Josh LaCelle Date Submitted: 10/1/07 Partner: Nick Rorrer Instructor: Steven Burrows Stoichiometry: Method of Continuous Variations Objective To determine the stoichiometry of the reaction between sodium hypochlorite (NaClO) and potassium iodide (KI) in aqueous solution. Experiment Data V NaClO (mL) V KI (mL) T NaClO ( ) T KI ( ) T final ( ) 45.00 5.00 23.04 22.55 25.14 40.00 10.00 23.04 22.55 28.77 35.00 15.00 23.04 22.55 28.18 30.00 20.00 23.04 22.55 27.09 25.00 25.00 23.04 22.55 26.51 20.00 30.00 23.04 22.55 25.45 15.00 35.00 23.04 22.55 24.61 10.00 40.00 23.04 22.55 23.80 5.00 45.00 23.04 22.55 22.68 Maximum heat release = .81 mole fraction NaClO a = 40.5ml NaClO b = 9.5ml KI Sample Calculations 1. Mole Fraction NaClO = Volume NaClO/(Volume NaClO + Volume K) Mole Fraction NaClO at 45 ml = 45ml /(45ml + 5ml) = 0.9 mole fraction 2. T initial = ((23.04 x 45.0)+(22.55 x 5.0))/50 = 22.991 3. T = final – initial = 25.14 - 22.99 = 2.15 ( ) 4.
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Experiment 5 Lab Write Up Stoichiometry - Date Perform:...

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