A student performed the "clock" reaction described in this experiment. She set up Reaction Mixture 4 by mixing 10 mL 0.010 M KI, 10 mL 0.001 M Na,S,O,, 10 mL 0.040 M KBRO,, and 20 mL 0.10 M HCl using the procedure given. It took exactly 21 seconds for the color to turn blue.

A student performed the "clock" reaction described in this experiment. She set up Reaction Mixture 4 by mixing 10 mL 0.010 M KI, 10 mL 0.001 M Na,S,O,, 10 mL 0.040 M KBRO,, and 20 mL 0.10 M HCl using the procedure given. It took exactly 21 seconds for the color to turn blue.

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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Question

A student performed the "clock" reaction described in this experiment. She set up
Reaction Mixture 4 by mixing 10 mL 0.010 M KI, 10 mL 0.001 M Na,S,O, 10 mL 0.040
M KBRO, and 20 mL 0.10 M HCl using the procedure given. It took exactly 21 seconds
for the color to turn blue.
1. What caused the solution to turn blue? And how will you take advantage of this color
change to measure rates?

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