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ChemLabReport3 - Stoichiometry Kerri Yohe CRN 91502 Craig...

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Stoichiometry Kerri Yohe CRN 91502 Craig Tollin
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Stoichiometry Name: Kerri Yohe Date Performed : 10/16/09 Partner: Makayla Burton Date Submitted : 10/23/09 Objective: to determine the stoichiometry of the reaction between sodium hypochlorite (NaClO) and potassium Iodide (KI) in aqueous solution. Experimental Data/Observations : Volume of NaClO(mL) Volume of KI(mL) Temperature of NaClO (°C) Temperature of KI (°C) Final Temperature after mixing 45.0 5.00 20.05 21.76 23.29 40.0 10.0 20.18 21.65 27.08 35.0 15.0 20.29 21.59 27.30 30.0 20.0 19.28 21.50 26.32 25.0 25.0 20.05 21.22 25.78 20.0 30.0 20.66 21.14 24.78 15.0 35.0 21.04 20.99 24.93 10.0 40.0 21.81 20.47 22.84 5.00 45.0 21.30 20.71 21.71 Sample Calculations : Mass KI: Mm KI= 166 g/mol (.4M)(.250L)= .100m KI (166 g/mol) = 16.6 g KI Volume of NaClO in solution: M 1 V 1 =M 2 V 2 (.762)(V 1 )=(.40)(250mL) V 1 = 131 mL NaClO Mole fraction of NaClO= (volume NaClO/(volume NaClO+Volume KI) =(45mL)/(45mL+5mL) = 0.9 Mole fraction of KI= .1 Mole Ratio between these two fractions= 9
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This note was uploaded on 10/26/2009 for the course CHEM 1045 taught by Professor Pgamateis during the Fall '08 term at Virginia Tech.

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ChemLabReport3 - Stoichiometry Kerri Yohe CRN 91502 Craig...

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