Chemical Kinetics Question 106

Question: A first order reaction which is 30% complete in 30 minutes has a half-life period of [AIIMS 1998]

Options:

A) 24.2 min

B) 58.2 min

C) 102.2 min

D) 120.2 min

Show Answer

Answer:

Correct Answer: B

Solution:

$ k=\frac{2.303}{t}\log \frac{a}{a-x} $

$ \frac{0.693}{T}=\frac{2.303}{t}\log \frac{100}{100-30} $
$ \therefore T=58.2 $ min.



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