Chemical Kinetics - Result Question 30
####30. Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is:
[2009]
(a) $0.5 \times 10^{-2} s^{-1}$
(b) $0.5 \times 10^{-3} s^{-1}$
(c) $5.0 \times 10^{-2} s^{-1}$
(d) $5.0 \times 10^{-3} s^{-1}$
Show Answer
Solution:
- (b) For a first order reaction
$t _{1 / 2}=\frac{0.693}{k} ; k=\frac{0.693}{1386}=0.5 \times 10^{-3} s^{-1}$
