Posted by **Val** on Wednesday, March 31, 2010 at 10:00pm.

For the first-order reaction A => 3 B + C, when [ A]0 = 0.014 mol·L-1, the concentration of B increases to 0.017 mol·L-1 in 2.7 min.

(a) What is the rate constant for the reaction expressed as the rate of loss of A?

I found this to be .1923, which I know is correct.

(b) How much more time would be needed for the concentration of B to increase to 0.034 mol·L-1?

min

I thought since .034 is twice .017 it would just be doubled...but this is wrong.

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