Question

Hydrogen combines with Nitrogen to form --------------------------- in the presence of Iron as a catalyst at high pressure and temperature.

Answer 1

Preparation of Hydrogen(Haber's process): Hydrogen does not combine with Nitrogen under ordinary conditions.

• But, Hydrogen and Nitrogen react in the presence of Iron$\left(\mathrm{Fe}\right)$ as a catalyst at high pressure and temperature.

$$\begin{gathered} {\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{fe}}{\rightleftharpoons }2{\mathrm{NH}}_3\left(\mathrm{g}\right)+\mathrm{Heat} \\ \mathrm{Nitrogen}\mathrm{Hydrogen}\mathrm{Ammonia} \end{gathered}$$

• The reaction is reversible and exothermic (produces heat).
• Ammonia is manufactured by this process, which is known as the “Haber process”
• Hydrogen combines with Nitrogen to form Ammonia in the presence of Iron as a catalyst at high pressure and temperature.