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Q.

The rate constant for a second order reaction is 8×10−5M−1 min⁡−1. How long will it take a 1 M solution to be reduced to 0.5 M

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a

8×10−5min⁡

b

8.665×103min⁡

c

4×10−5min⁡

d

1.25×104min⁡

answer is D.

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Detailed Solution

K2=1txaa-x8×10−5=1t0.511-0.5; 8×105=1t[1]t=18×10−5=0.125×105=1.25×104min⁡
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The rate constant for a second order reaction is 8×10−5M−1 min⁡−1. How long will it take a 1 M solution to be reduced to 0.5 M