CourseHeroChemLab5

CourseHeroChemLab5 - Date Performed: 2/22/2008 Date...

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Date Performed: 2/22/2008 Name: removed Date Submitted: 2/29/2008 Partner: removed Instructor: Shengliang Zhao Stoichiometry Objective: The objective of this experiment was to determine the stoichiomety of the reaction between sodium hypochlorite and potassium iodide in aqueous solution. Experimental Data: Temperature NaClO solution- 20.53°C Temperature KI Solution- 18.79°C Temperature of mixture after reaction with 5 mL KI & 45 mL NaClO- 22.97°C 10 mL KI & 40 mL NaClO- 26.36°C 15 mL KI & 35 mL NaClO- 26.84°C 20 mL KI & 30 mL NaClO- 25.87°C 25 mL KI & 25 mL NaClO- 24.61°C 30 mL KI & 20 mL NaClO- 24.01°C 35 mL KI & 15 mL NaClO- 22.86°C 40 mL KI & 10 mL NaClO- 21.49°C 45 mL KI & 5 mL NaClO- 20.58°C Sample Calculations: Initial temperature of mixture = (Temp KI*Volume KI + Temp NaClO * Volume NaClO) / (Total volume)
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Initial temp trial 1 = (18.79°C * 5mL + 20.53°C * 45 mL) / (5mL + 45 mL) = 20.36°C Mole fraction NaClO = Volume NaClO / (Volume NaClO + Volume K) Mole fraction NaClO for trial 1 = 45 mL / (5 mL + 45 mL) = 0.9
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CourseHeroChemLab5 - Date Performed: 2/22/2008 Date...

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