The units of rate constant and rate of a reaction are idential for:

Options

A. third - order reaction
B. second - order rection
C. first - order reaction
D. zero - order reaction

Answer

D

Explanation

Be careful not to confuse the rate of a reaction and the rate constant. The rate depends on concentrations, whereas the rate constant does not (it is a constant). Hiher the activation energy, smaller the rate constant (Arrhenius equation: `k=Ae^(-E_(0)//RT)` . Only a temperature change or the introduction of a catalst can chamge the value of `k` .