Chemical Kinetics Question 145

Question: The half life of a first order reaction is $ 69.35,\sec $ . The value of the rate constant of the reaction is [CBSE PMT 1990]

Options:

A) $ 1.0,{s^{-1}} $

B) $ 0.1,{s^{-1}} $

C) $ 0.01,{s^{-1}} $

D) $ 0.001,{s^{-1}} $

Show Answer

Answer:

Correct Answer: C

Solution:

$ k=\frac{0.693}{{t_{1/2}}}=\frac{0.693}{69.35}=9.99\times {10^{-3}}=0.01,{s^{-1}} $



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