Chem Lab 6 - 1 Date Preformed: 10/15/2009 Date Submitted:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Date Preformed: 10/15/2009 Name: Westin Keeler Date Submitted: 10/21/2009 Partner: Becca Maine Instructor: Jinmei Zhang Determination of a Chemical Formula Objective: To determine the stoichiometry of the reaction between sodium hypochlorite (NaClO) and Potassium iodide (KI) in aqueous solution. Experimental Data: Volume Bleach: 131mL Mass KI: 16.6g V NaClO (mL) V KI (mL)Initial T(°C) NaClO Initial T(°C) KI Final T(°C) 45.0 05.0 21.60 22.18 21.76 40.0 10.0 21.60 22.18 28.78 35.0 15.0 21.60 22.18 28.58 30.0 20.0 21.60 22.18 27.07 25.0 25.0 21.60 22.18 26.54 20.0 30.0 21.60 22.18 25.43 15.0 35.0 21.60 22.18 24.70 10.0 40.0 21.60 22.18 23.90 05.0 45.0 21.60 22.18 22.62 Sample Calculations : Mole Fraction NaClO: Volume NaClO = 45.0 mL = 0.90 Volume NaClO + Volume KI 45.0 mL + 05.0 ml Average Initial T: (T1V1) + (T2V2) = (21.60)(45.0) + (22.18)(5.00) = 21.7°C (V1+V2) (45.0 + 05.0) Change in T: T final - T avg = 21.76 - 21.7 = 0.1°C From the graph, the mole fraction NaClO with the largest ΔT is 0.80, the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/03/2010 for the course CHEM 1025 taught by Professor Eddleton during the Fall '08 term at Virginia Tech.

Page1 / 4

Chem Lab 6 - 1 Date Preformed: 10/15/2009 Date Submitted:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online