Question

The half-life period of a first order reaction is:

• A. directly proportional to the initial concentration 'a'
• B. inversely proportional to 'a'
• C. independent of 'a'
• D. none of these

Answer 1

The correct option is C independent of 'a'

Half life of first order reaction is given by

$t_{1/2}=\frac{0.693}{K}$

So, it is independent of initial concentration of $a$