EASY
12th ICSE
IMPORTANT
Earn 100

25% of a first-order reaction is completed in 30 minutes. Calculate the time taken in minutes for the reaction to go to 90% completion.

Important Questions on Chemical Kinetics

EASY
12th ICSE
IMPORTANT
Show that for a first order reaction the time required to complete 75 % of reaction is about 2 times more than that required to complete 50 % of the reaction.
MEDIUM
12th ICSE
IMPORTANT

A first order reaction is 50 % completed in 30 minutes at 300 K and in 10 minutes at 320 K. Calculate the activation energy of the reaction.

(R=8.314 J K-1mol-1).