Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:Under certain conditions the reaction H2O2 + 3I + 2H*→ I3¯ + 2H2O occurs by the
following series of steps:
ki
Step 1. H2O2+H* =H;O2"
+
with K (equilibrium constant) = k1/k-1
Step 2.
H3O2* +I→ H2O + HOI
(slow, rate constant k2)
Step 3.
HỘI + I→ OH¯ +I2
(fast, rate constant k3)
Step 4.
OH + H*→ H2O
(fast, rate constant k4)
Step 5.
I2 + I→ 13
(fast, rate constant k5)
Use approximations (RDS, eq, steady-state) if necessary
The rate constant k for the reaction would be given by
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