Question

What is the order of a reaction, if its half life is independent of initial concentration

Answer 1

The half life period a reaction is inversely proportional to(1-n) the initial concentration of the reactant.

Half life =K.A^(1-n)

For 1st order n=1 so A^0= constant.

For 2nd order n=2

so Half life is proportional A^-1

So when the initial concentration is doubled the half life period will be halved.

So the reaction is Second Order.