Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • At particular concentration, the half life of the reaction is 200 minutes. When the concentration of the reactant become double half life becomes, 50 minutes, then what among the following will be

At particular concentration, the half life of the reaction is 200 minutes. When the concentration of the reactant become double half life becomes, 50 minutes, then what among the following will be the order of the reaction?

 

Option: 1

Zero


Option: 2

First 


Option: 3

Second


Option: 4

Third


Answers (1)

best_answer

Half-time of a reaction \mathrm{t_{1 /2}=[A o]^{1-n}} where Ao is initial concentration of reactant and \mathrm{n}  is order of reaction with respect to that reactant.

Since, the half-life gets  \mathrm{1 / 4^{\text {th }}} on halving the initial concentration, the half-life is inversely proportional to square of initial concentration.
\mathrm{ \Rightarrow 1-n=-2 }
\mathrm{ \Rightarrow n=3 }
Hence, it is a third order reaction.

Posted by

Suraj Bhandari

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2025 exam date soon; syllabus, previous year question papers, books for preparation
anam-khan

JEE Main 2025 exam date this month; updates on reduced syllabus, registration, number of attempts

Latest Question