Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • (a) A first order reaction is complete in 40 minutes. Calculate the value of rate constant. In what time will the reaction be

(a) A first order reaction is 25\; ^{o}/_{o} complete in 40 minutes. Calculate the value of rate constant. In what time will the reaction be 80\; ^{o}/_{o} completed ?

(b) Define order of reaction. Write the condition under which a bimolecular reaction follows first order kinetics.

 

 

Answers (1)

(a) k = (2.303 / t) log ([A]o / [A]t)

k = (2.303 / 40) log (100 / 75)

    = 0.007 min-1 

t = (2.303 / k) log ([A]o / [A]t)

t = (2.303 / 0.0071) log (100/20)

t =230 min

(b) Order of reaction is the Sum of powers of the concentration of the reactants in the rate law expression.

Bimolecular reaction follows first order kinetics when one of the reactant is present in large excess.

Posted by

Safeer PP

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE 12th result 2025 sees more in compartment, JNVs on top, perfect-scorers in minor subjects
anam-khan

Low score in CBSE results? Courses, career options after 12th open to you
anam-khan

CBSE class 10, 12 results: West Bengal CM Mamata Banerjee congratulates successful candidates

Latest Question