Chemistry - Chemical Kinetics Question with Solution | TestHub

For a first order reaction, the half-life is given by the expression:

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

This expression shows that the half-life of a first order reaction is independent of the initial concentration of the reactant.

Therefore, if the initial concentration of the reactant is doubled, the half-life $t_{1/2}$ remains the same.

Answer: $t_{\frac{1}{2}}$ remains the same