Question

The correct difference between first and second order reactions is that

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> NEET (UG) - 2018

Answer 1

In both first and second order reaction, the rate depends on the reactant concentration.

Both first and second order reactions can be catalyzed.

For first order reaction,
$t_{1/2}=\frac{0.693}{k}$,

Thus, half life period is independent of initial concentration of reactant.

For second order reaction, $t_{1/2}=\frac{1}{k\left[A_0\right]}$
Thus, half life period depends on initial concentration of reactant.

Hence, option (d) is correct.