Question

A first order gas phase reaction : 

 A₂B₂ → 2A(g) + 2B(g)

at the temperature 400°C has the rate constant k = 2.0 x 10^-4 sec^-1. What percentage of A₂B₂ is decomposed on heating for 900 seconds ? [Antilog 0.0781 = 1.1971

Answer 1

=> 100 = 1.197[100 - x]

=> 1.119.7 - 1.197x

=> 1.197x = 19.7

.^. . x = 19.7/1.197

= 16.45 %