NEET Chemistry Chemical Kinetics Questions Solved


In the following first order competing reactions:

A + Reagent  Product

B + Reagent  Product

The ratio of K1/K2 if only 50% of B will have been reacted when 94% of A has been reacted in same time is:

(a) 4.06

(b) 0.246

(c) 2.06

(d) 0.06

(a) For 50% B reacted, K2 = (2.303/T2)log100/50

For 94% A reacted, K1 = (2.303/T1)log100/6

K2/K1 = t2/t1x0.3010/1.2218

Since t2 = t1, because 50% B has reacted when 94% A has reacted.

K2/K1 = 0.3010/1.2218 = 0.246 and K1/K2 = 4.06

 

Difficulty Level:

  • 50%
  • 25%
  • 18%
  • 8%