Chemical Kinetics Question 163

Question: The rate constant of a reaction is 0.69×101min1 and the initial concentration is 0.2mol,l1. The half-life period is [AIIMS 1998]

Options:

A) 400 sec

B) 600 sec

C) 800 sec

D) 1200 sec

Show Answer

Answer:

Correct Answer: B

Solution:

The unit of rate constant shows that reaction is of first order. For first order reaction, half life is independent of initial conc. of the reactant.

Thus, t1/2=0.6930.69×101=0.693×600.69×101=600,sec



NCERT Chapter Video Solution

Dual Pane