For a zero order reaction A → products, t_1 / 2 is:

$\displaystyle \frac{[\mathrm{A}]_{0}}{\mathrm{k}}$

$\displaystyle \frac{2 \cdot 303 \log 2}{\mathrm{k}}$

$\displaystyle \frac{1}{\mathrm{k}[\mathrm{A}]_{0}}$

$\displaystyle \frac{[\mathrm{A}]_{0}}{2 \mathrm{k}}$ where $\displaystyle [\mathrm{A}]_{0}=$ initial concentration of the reactant, $\displaystyle \mathrm{k}=$ rate constant.