NEET | 2018Chemical Kinetics and Nuclear ChemistryHard

Question

The correct difference between first- and second-order reaction is that

Options

the rate of a first-order reaction does not depend on reactant concentration; the rate of a secondorder reaction does depend on reactant concentrations.

the half-life of a first-order reaction does not depend on [A]₀; the half-life of a second-order reaction does depend on [A]₀

a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed.

the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations

Solution

(t_1/2)1^st order = Independent of Concentration
(t_1/2)2^nd order $\propto \frac{1}{{[A]}_{o}}$

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