Chemical Kinetics Question 170

Question: After how many seconds will the concentration of the reactants in a first order reaction be halved, if the decay constant is 1.155×10-3sec1 [CBSE PMT 2000]

Options:

A) 100 sec

B) 200 sec

C) 400 sec

D) 600 sec

Show Answer

Answer:

Correct Answer: D

Solution:

t=2.303klogaax

t=2.3031.155×103log10010050=600sec



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