Q. The rate constant for a zero order reaction is
A) $k = \ln\frac{c_{0} - c_{t}}{2t}$
B) $k = \frac{c_{0} - c_{t}}{t}$
C) $k = \frac{c_{0}}{c_{t}}$
D) $k = \frac{c_{0}}{2t}$
Explanation
(b)
For a zero order reaction
$A \rightarrow B$
$\frac{- d\lbrack A\rbrack}{dt} = k$
Or $–\int_{C_{0}}^{C_{t}}{d\lbrack A\rbrack} = k\int_{t\ = \ 0}^{t\ = \ 0}{dt}$
$\left( C_{0} - C_{t} \right) = kt$
Or $k = \left( C_{0} - C_{t} \right)/t$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.