Chemical Kinetics Question 167
Question: For a first order reaction $ A\to $ product, the rate of reaction at $ [A]=0.2mol{l^{-1}} $ is $ 1.0\times {10^{-2}}mol{l^{-1}},{{\min }^{-1}} $ . The half life period for the reaction is [Roorkee 1999]
Options:
A) 832 s
B) 440 s
C) 416 s
D) 13.86 s
Show Answer
Answer:
Correct Answer: D
Solution:
$ r=K $ [reactant]
$ \therefore K=\frac{1.0\times {10^{-2}}}{0.2}=0.05 $
$ {t_{1/2}}=\frac{0.693}{0.05}=13.86,s $
