EXP12 Chemicalreaction rate

EXP12 - Name Jenny Yoon Date Performed Lab Partner Adam Potts Date Submitted Instructor Xu Zhou Chemical Reaction Rate Objective To measure the

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Unformatted text preview: Name: Jenny Yoon Date Performed: 1/29/08Lab Partner: Adam Potts Date Submitted: 2/5/08 Instructor: Xu Zhou Chemical Reaction Rate Objective: To measure the decrease in the concentration of hydrogen peroxide solution as its catalyst is decomposing. To graph the results and find the first order rate constant and the half life of the decomposition rate. Experimental Data: Time (min) Volume of KMnO 4 (mL) 1 6.20 6 5.70 11 5.70 16 5.40 21 4.70 31 3.90 41 3.80 51 3.30 61 3.40 Concentration of KMnO 4 : 0.063 M Sample Calculation 1.Moles of KMnO 4 : Moles = Molarity X Liters 0.063 M X .00620 L = 0.000391 moles KMnO 4 2. Moles of H 2 O 2 : Mole Ratio: 5/2 0.000391 moles KMnO 4 X 5/2 = 0.000978 moles H 2 O 2 3. [H 2 O 2 ] : Molarity = moles / Liters 0.000978 H 2 O 2 / 0.001 L = 0.00978 M H 2 O 2 4. ln[H 2 O 2 ]: 5. 2 2 0 [ ] ln 2 H O : (from graph) ln[H 2 O 2] = -2.31 e-2.31 = 0.0992 0.0992 / 2 = 0.0496 ln(0.0496) = -3.00 6. t 1/2 : y = -0.011x – 2.31 (-3.00) = -0.011x – 2.31 t 1/2 = 62.7 mins = 62....
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This note was uploaded on 03/31/2008 for the course CHEM 1045 taught by Professor Pgamateis during the Spring '08 term at Virginia Tech.

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EXP12 - Name Jenny Yoon Date Performed Lab Partner Adam Potts Date Submitted Instructor Xu Zhou Chemical Reaction Rate Objective To measure the

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