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The reaction cis-Xunderset(k(b))overset...

The reaction cis-X`underset(k_(b))overset(k_(f))ltimplies` trans-X is first order in both direction At `25^(@)C,` the equilibrium constant is `0.10` and the rate constant `k_(f)=3xx10^(-4)s^(-1)` In an experiment starting with the pure cis- from , how long would it take for half of the equilibrium amount of the trans-iomer to be fromed?

A

150 sec

B

200 sec

C

240 sec

D

210 sec

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The correct Answer is:
D
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