A) A first-order reaction can catalyzed; a second-order reaction cannot be catalyzed
B) The half-life of a first-order reaction does not depend on\[{{\text{ }\!\![\!\!\text{ A }\!\!]\!\!\text{ }}_{0}}\]; the half-life of a second-order reaction does depend on \[{{\text{ }\!\![\!\!\text{ A }\!\!]\!\!\text{ }}_{0}}\]
C) The rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
D) 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.
Correct Answer: B
Solution :
For first order reaction, \[{{t}_{1/2}}=\frac{0.693}{k}\], which is independent of initial concentration of reactant. For second order reaction, \[{{t}_{1/2}}=\frac{1}{k[{{A}_{0}}]}\], which depends on initial concentration of reactant.
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