Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • The decomposition of NH3 on platinum surface is zero order reaction.

4.3     The decomposition of  NH_{3} on platinum surface is zero order reaction. What are the rates of production of N_{2} and H_{2} if k=2.5\times 10^{-4}mol^{-1}L s^{-1}?

Answers (1)

best_answer

The decomposition of  NH_{3} on the platinum surface reaction 

2NH_{3}(s)\overset{Pt}{\rightarrow}N_{2}(g)+3H_{2}(g)

therefore,   

Rate = -\frac{1}{2}\frac{d[NH_{3}]}{dt}=\frac{d[N_{2}]}{dt}=\frac{1}{3}\frac{d[H_{2}]}{dt}

For zero order reaction rate = k

therefore, -\frac{1}{2}\frac{d[NH_{3}]}{dt}=\frac{d[N_{2}]}{dt}=\frac{1}{3}\frac{d[H_{2}]}{dt}=k

So   \frac{d[N_{2}]}{dt}= 2.5\times 10^{-4}mol\ L^{-1}\ s^{-1}

and the rate of production of dihydrogen (H_{2}) = 3\times(2.5\times 10^{-4}) mol\ L^{-1}\ s^{-1}

                                                                           = 7.5\times 10^{-4}mol\ L^{-1}\ s^{-1}

Posted by

manish

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 Class 12 Computer Science Exam Analysis 2025: Paper 'moderate', but 'tougher' than last three years
anam-khan

CBSE Class 12 Accountancy Exam Analysis 2025: Paper ‘moderate', includes application-based questions
anam-khan

CBSE mulls allowing non-programmable, basic calculators for class 12 Accountancy exam

Latest Question