The catalyst and promoter respectively used in the Haber's process of industrial synthesis of ammonia are
The catalyst and promoter respectively used in the Haber's process of industrial synthesis of ammonia are
$\mathrm{Mo}, \mathrm{V}_2 \mathrm{O}_5$
$\mathrm{V}_2 \mathrm{O}_5, \mathrm{Fe}$
$\mathrm{Fe}, \mathrm{Mo}$
$\mathrm{Mo}, \mathrm{Fe}$
Solution
In the Haber's process for the synthesis of ammonia from $\mathrm{N}_2$ and $\mathrm{H}_2$, $\mathrm{Fe}$ is used as catalyst and Mo works as activator.
$\mathrm{N}_2+3 \mathrm{H}_2 \stackrel{\mathrm{Fe}, \mathrm{Mo}}{\rightleftharpoons} 2 \mathrm{NH}_3+22.4 \mathrm{kcal}$