The decomposition of `N_(2)O` into `N_(2)` and `O_(2)` in presence of gaseous argon follows second order kinetics with rate constant, `K=2.0 xx10^(11) e^(-30000K//T)mol^(-1)s^(-1)`.
The pre`-` exponential factor and the enrgy of activation are respectively `(R=2 cal K^(-1) mol^(-1))`

Options

A. `2.0xx10^(8)L mol^(-1)s^(-1),30Kcal mol^(-1)`
B. `2.0xx10^(8)L mol^(-1)s^(-1),60Kcal mol^(-1)`
C. `2.0xx10^(11)L mol^(-1)s^(-1),60Kcal mol^(-1)`
D. None of these

Answer

3

Explanation

Pre-exponential factor `A=2.0xx10^(11)Lmol^(-1)s^(-1),(E_(a))/(R)=-30000`
`rArr" "E_(a)=2xx30000cal=60k cal mol^(-1)`