Question

Water gas is

• A. $\mathrm{CO}+{\mathrm{H}}_2^{}\mathrm{O}$
• B. ${\mathrm{CO}}_2^{}+{\mathrm{H}}_2^{}\mathrm{O}$
• C. $\mathrm{CO}+{\mathrm{H}}_2$
• D. None of these

Answer 1

The correct option is C

$\mathrm{CO}+{\mathrm{H}}_2$

Explanation for the correct option C:

• Water gas is the mixture of carbon monoxide and hydrogen.
• Synthesis gas( Water gas) is made by passing air over a red-hot carbon fuel such as coke.:

${\mathrm{H}}_2^{}\mathrm{O}\left(\mathrm{l}\right)+\mathrm{C}\underset{}{\left(\mathrm{s}\right)\to \mathrm{CO}\left(\mathrm{g}\right)+{\mathrm{H}}_2^{}\left(\mathrm{g}\right)}$ (ΔH = +131 kJ/mol)

Explanation for incorrect option B:

The mixture of Carbon dioxide and water produces slowly carbon acid acid ( ${\mathrm{H}}_2^{}{\mathrm{CO}}_3^{}$) not water gas.

Explanation for incorrect option A:

Carbon dioxide can react with water to form carbon dioxide and hydrogen $\mathrm{CO}+{\mathrm{H}}_2^{}\mathrm{O}\underset{}{\to }{\mathrm{CO}}_2^{}+{\mathrm{H}}_2$

Water gas is the mixture of Carbon monoxide and Hydrogen.