Question

The rate equation for a reaction, $N_2O \longrightarrow N_2 + 1/2O_2$ is Rate = $k[N_2O]^0$ = k. If the initial concentration of the reactant is a mol Lit⁻¹, the half-life period of the reaction is
(a) $t_\frac{1}{2} = \frac{a}{2k}$
(b) $-t_\frac{1}{2}= ka$
(c) $t_\frac{1}{2}= \frac{a}{k}$
(d) $t_\frac{1}{2} = \frac{k}{a}$

Answer 1

for zero order of rexn k=c(¡ntial)-c(final)/ time then for half life c(final)=c(intial)/2 where c(inti)=a then t1/2=a/2k