# Problem: For the reaction, A → B, the rate constant is 0.0208 M-1 sec-1. How long would it take for [A] to decrease from 0.100 to 0.0450 M?a. 2.66 secb. 38.4 secc. 72.2 secd. 588 sece. 1072 sec

###### FREE Expert Solution

Determine the order of the reaction and calculate for the time it will take to decrease A from 0.10 to 0.450 M

In this case, follow the steps:

Step 1. Determine the order of the reaction using the units of rate constant as hint

Step 2. Calculate for the time using the integrated rate law equation from Step 1.

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###### Problem Details

For the reaction, A → B, the rate constant is 0.0208 M-1 sec-1. How long would it take for [A] to decrease from 0.100 to 0.0450 M?

a. 2.66 sec

b. 38.4 sec

c. 72.2 sec

d. 588 sec

e. 1072 sec