In a first order reaction the concentration of reactant decreases from 800 $mol/dm^{6}$ to 50 $mol/dm^{6}$in $2 imes 10^{4}$s. The rate constant of reaction in $s^{- 1}$ is

Question

In a first order reaction the concentration of reactant decreases from 800 $mol/dm^{6}$ to 50 $mol/dm^{6}$in $2 	imes 10^{4}$s. The rate constant of reaction in $s^{- 1}$ is

Dr. Abubacker · Accepted Answer

(c)
$k = \frac{2.303}{t}\log\frac{A_{0}}{A_{t}}$
$= \frac{2.303}{2 	imes 10^{4}}\log\frac{800}{50}$
= $1.386 	imes 10^{4}s^{- 1}$

Q. In a first order reaction the concentration of reactant decreases from 800 $mol/dm^{6}$ to 50 $mol/dm^{6}$in $2 \times 10^{4}$s. The rate constant of reaction in $s^{- 1}$ is

Explanation

Reviewed by Dr. Abubacker

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