The rate constant of a zero-order reaction is $0.04 \mathrm{M} \mathrm{sec}^{-1}$. The concentration

Question

The rate constant of a zero-order reaction is $0.04 \mathrm{M} \mathrm{sec}^{-1}$. The concentration of the reactant remaining after 25 sec is 0.5 M . The initial concentration of the reactant is

Professor PC Thomas Classes · Answer

For a zero-order reaction $[A] = [A]_0 - kt$. $[A]_0 = 0.5 + (0.04 	imes 25) = 1.5 \mathrm{~M}$.