The rate constant for the reaction is 0.950 M^-1s^-1 at 200 C. A --> products If

Question

The rate constant for the reaction is 0.950 M^-1s^-1 at 200 C. A --> products If the initial concentration of A is 0.00880 M, what will be the concentration after 175 s? The rate constant for the reaction is 0.950 M^-1s^-1 at 200 C. A --> products If the initial concentration of A is 0.00880 M, what will be the concentration after 175 s? The rate constant for the reaction is 0.950 M^-1s^-1 at 200 C. A --> products If the initial concentration of A is 0.00880 M, what will be the concentration after 175 s?

Explanation / Answer

k = 0.95

if units are 1/M-s; this must be second order

then

1/A = 1/A0 + kt

is valid

therefore

A0 = 0.0088

t = 175 s

k = 0.95

substitute all

1/A = 1/A0 + kt

1/A = 1/0.0088+ 0.95*175

1/A = 279.8

A = 1/279.8 = 0.0035739 M

A = 0.0035739 M

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