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In a first order reaction, the concentra...

In a first order reaction, the concentration of the reactant decreases form `800 "mol dm"^(-3)` to `50 "mol dm"^(-3)` in `2 xx 10^(4) s`. The rate constant of the reaction (in `s^(-1)`) is

A

`2xx 10 ^(4)`

B

`3.45xx 10 ^(-5)`

C

`1.386xx 10 ^(-4)`

D

`2xx 10 ^(-4)`

Text Solution

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The correct Answer is:
c
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