For the reaction A + B + C D The following data were obtained at constant temper

Question

For the reaction
A + B + C D
The following data were obtained at constant temperature:

1. What is the order with respect to each reactant? (Enter the order for A as Answer 1, that for B as Answer 2, and that for C as Answer 3. You must get all 3 correct.)

2. What is the value of the rate constant for the reaction at this temperature?

Trial Initial [A] (mol/L) Initial [B] (mol/L) Initial [C] (mol/L) Initial Rate (mol/L . s) 1 0.1195 0.3395 0.0679 1.240 2 0.2390 0.3395 0.0679 2.479 3 0.2390 0.6790 0.0679 9.917 4 0.1195 0.3395 0.1358 1.240

Explanation / Answer

rate= k [A]x [B]y [C]z

from data table

1.240 = k [0.1195]x [0.3395]y [0.0679]z ------------->(1)

2.479 =k [0.2390]x [0.3395]y [0.0679]z ------------->(2)

9.917 =k [0.2390]x [0.6790]y [0.0679]z ------------->(3)

1.240 = k [0.1195]x [0.3395]y [0.1358]z ------------->(4)

by solving 1 and 2                   

x = 1

by solving 2 and 3

y = 2

by solving 1 and 3

z = 0

rate= k [A]1 [B]2 [C]0

from (1)

1.240 = k [0.1195]1 [0.3395]2 [0.0679]0 ------------->(1)

substitute x , y,z values

k = 90

k = 90 mol-2 lit2 sec-1    ------------------------------------> answer

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