chemical reaction rate

# chemical reaction rate - Date Performed Date Submitted...

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Date Performed: 2/2/06 Name: Ronald Lampkins Date Submitted: 2/9/06 Partner: Jason Herrala Instructor: Shengliang Zhao Chemical Reaction Rate Objectives: To measure the decrease in the concentration of a hydrogen peroxide solution as it is catalytically decomposing. To graph the results and form the graph deduce the first order reaction rate constant and the half-life of the decomposition reaction. Experimental Data: Time (min) KMnO4 9 (mL) 1 6.61 6 4.89 11 4.15 16 3.80 21 3.40 31 3.15 41 2.65 51 1.20 61 0.83 Initial molarity of potassium permanganate solution: 0.063 M Sample Calculations: 1. Moles of KMnO 4 Time 1 0.063 M KMnO 4 = x / .00661 L X = 4.16 x 10 -4 moles KMnO 4 2. Moles of H 2 O 2 Time 1 5/2 x moles KMnO 4 5/2 x 4.16 x 10 -4 moles KMnO 4 = 1.0 x 10 -3 moles H 2 O 2 3. Molarity of H 2 O 2 Time 1 M = mol / L 0.001 mol H 2 O 2 / .01 mL H 2 O 2 = 1.0 x 10 -1 M H 2 O 2

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4. ln[A] 0 = -2.33 e^2.33 = 0.097 0.097 / 2 = 0.048 ln 0.048 = -3 -3 on the y-intercept crosses at 22 minutes Half-life = 22 min
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## This note was uploaded on 03/29/2008 for the course CHEM 1045 taught by Professor Pgamateis during the Fall '08 term at Virginia Tech.

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chemical reaction rate - Date Performed Date Submitted...

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