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The dye "Smoky Red" (SR) also reacts with NaOH(aq). You are in the lab and perform the following steps: Run1:  20 mL of SR stock solution (1.9 X 10-4 M) diluted to 100 mL  10 mL of NaOH stock solution (2.2 X 10-1 M) diluted to 100 mL      at t=0, two above solutions are mixed  SR Absorbance (Beer's Law constant = 1.2 X 105) is measured at 90 sec intervals Run2: 20 mL of SR stock solution diluted to 100 mL 20 mL of NaOH stock solution diluted to 100 mL     at t=0, two above solutions are mixed SR Absorbance is measured at 60 sec intervals Reciprocal plot of SR absorbance gives                    q2 = 30.6 X 10-2 sec-1   The reaction of Smoky Red with sodium hydroxide solution is found to occur with a pseudo rate constant q1 of 7.3 X 10-2 sec-1. After Run 2 when volume of sodium hydroxide is doubled, q2 = 30.6 X 10-2 sec-1. Assuming the reaction is second order with respect to the dye, what is n for this reaction (round to the nearest whole number)?

The dye "Smoky Red" (SR) also reacts with NaOH(aq). You are in the lab and perform the following steps: Run1:  20 mL of SR stock solution (1.9 X 10-4 M) diluted to 100 mL  10 mL of NaOH stock solution (2.2 X 10-1 M) diluted to 100 mL      at t=0, two above solutions are mixed  SR Absorbance (Beer's Law constant = 1.2 X 105) is measured at 90 sec intervals Run2: 20 mL of SR stock solution diluted to 100 mL 20 mL of NaOH stock solution diluted to 100 mL     at t=0, two above solutions are mixed SR Absorbance is measured at 60 sec intervals Reciprocal plot of SR absorbance gives                    q2 = 30.6 X 10-2 sec-1   The reaction of Smoky Red with sodium hydroxide solution is found to occur with a pseudo rate constant q1 of 7.3 X 10-2 sec-1. After Run 2 when volume of sodium hydroxide is doubled, q2 = 30.6 X 10-2 sec-1. Assuming the reaction is second order with respect to the dye, what is n for this reaction (round to the nearest whole number)?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The dye "Smoky Red" (SR) also reacts with NaOH(aq). You are in the lab and perform the following steps:

Run1:

  •  20 mL of SR stock solution (1.9 X 10-4 M) diluted to 100 mL
  •  10 mL of NaOH stock solution (2.2 X 10-1 M) diluted to 100 mL    
  •  at t=0, two above solutions are mixed
  •  SR Absorbance (Beer's Law constant = 1.2 X 105) is measured at 90 sec intervals

Run2:

  • 20 mL of SR stock solution diluted to 100 mL
  • 20 mL of NaOH stock solution diluted to 100 mL    
  • at t=0, two above solutions are mixed
  • SR Absorbance is measured at 60 sec intervals
  • Reciprocal plot of SR absorbance gives                    q2 = 30.6 X 10-2 sec-1

 

The reaction of Smoky Red with sodium hydroxide solution is found to occur with a pseudo rate constant q1 of 7.3 X 10-2 sec-1. After Run 2 when volume of sodium hydroxide is doubled, q2 = 30.6 X 10-2 sec-1. Assuming the reaction is second order with respect to the dye, what is n for this reaction (round to the nearest whole number)?

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