Published by:
CGP EDU Academic Team
Published on: August 14, 2026
For the first order reaction 
, 1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is ..... min. (Round off to the nearest integer). Use Properties of logarithms : (Round off to the nearest integer) [Use : ln 2 = 0.69, ln 10 =2.3 Properties of logarithms: 
(Round off to the nearest integer)
Text Solution
Verified by ExpertsThe correct answer is:
300
(300)
A ⟶ 2 B
t = 0 1 mole 0
t = 100 min 1 − x 2x
= 0.9 mol = 0.2 mol
Now, 
(taking ln3=1.11)
Ans. 600 to 700
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a…
For the reaction, the plot of is given below:
The temperature at which the rate constant of the …
The rate constant of a reaction increases by five times on increase in temperature from 27°C to 52°…
An exothermic reaction X → Y has an activation energy 30 . If energy change during thereaction is…
If the activation energy of a reaction is , the fraction of molecules at 700 K having enoughenergy…
The decomposition of formic acid on gold surface follows first order kinetics. If the rate constant…