ALEKS- 14) Chem 112 Summer 2018 Brandywine . L -Homework 2 . Kinetics 1 (C-1 8 o

Question

ALEKS- 14) Chem 112 Summer 2018 Brandywine . L -Homework 2 . Kinetics 1 (C-1 8 of 11 9 1011 ments of the initial rate of a certain reaction are given in the table below. I2 initial rate of reaction 0.97 M 0.44 M 3.0x 10 M/s 0.97 M10, 19 MI 1.3x104 Ms 0.35 MI 0.44 MI 1.1x 10 Af/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k Be sure your value for the rate constant has the correct number of significant digits. Also be sure your a nswer has the correct unit symbol. rate D Submit Assigr

Explanation / Answer

i) From the data we know that when one of the reactant concentration reduced to around half, the rate of reaction reduced to around half. Therefore, this second order reaction

Therefore, rate law is

rate=-d[H2] /dt = k [H2] [I2]

where, k is rate constant

ii)

rate = k [H2] [I2]

3.0×104M/s = k × 0.97M × 0.44M

k = 3.0×104M /s / 0.97M × 0.44M

k = 7.03×104 M-1 s-1

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