MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        

The activation energy of a certain uncatalysed reaction at 300K is 76 kJ/mol.The activation energy is lowered by 19 kJ/mol by the use of catalyst. By what factor, the rate of catalysed reaction is lowered?

7 years ago

Answers : (1)

vikas askiitian expert
509 Points
							

K = Ae-E/RT                                      (E is activation energy)

rate(R)= K(a)n                     (k=rate constant & a is concentration  , n is order of reaction)                  

rate directily proportional to rate constant so

 

R1/R2 = K1/K2 = e[-E1+E2]/RT           

            =e[-76+19]/RT 

R1/R2 = e-2.28                                       (e = 2.8 approx)

R2 = 8R1              

 

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details