Question

How are the following prepared from hydrogen? illustrate with the equation. give the condition of the reaction

• Methane

Answer 1

Part 1: Preparation of Methane:

• Hydrogen reacts with Carbon dioxide at $300-400°\mathrm{C}$and pressure in the presence of a nickel $\left(\mathrm{Ni}\right)$ catalyst to produce methane and water.

Part 2: Reaction involved:

• $\underset{\mathrm{Carbon}\mathrm{dioxide}}{{\mathrm{CO}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Hydrogen}}{4{\mathrm{H}}_2\left(\mathrm{g}\right)}\underset{\mathrm{Ni}}{\overset{300-400°\mathrm{C}}{\to }}\underset{\mathrm{Methane}}{{\mathrm{CH}}_4\left(\mathrm{g}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\mathrm{Energy}$
• The above reaction is called the Sabatier reaction.