Question

The order of the reaction, if the time of half-completion is changed from 50 sec to 25 sec, when the initial concentration is changed from 0.5 to 1M will be ___________

(a) 0

(b) 1

(c) 2

(d) 3

I have been asked this question by my college professor while I was bunking the class.

This interesting question is from Integrated Rate Equation and Half Lives topic in section Reaction Dynamics of Engineering Chemistry I

Answer 1

The correct choice is (c) 2

Explanation: Tb / Ta = (a/b)^n-1