Question

Which of the following is water gas?

• A. ${\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$
• B. $\mathrm{CO}+{\mathrm{H}}_2\mathrm{O}$
• C. ${\mathrm{CO}}_2+{\mathrm{H}}_2$
• D. $\mathrm{CO}+{\mathrm{H}}_2$

Answer 1

The correct option is D

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

Preparation of water gas: Carbon$\left(\mathrm{C}\right)$ reacts with steam$\left({\mathrm{H}}_2\mathrm{O}\right)$ to form Carbon monoxide$\left(\mathrm{CO}\right)$ and Hydrogen $\left({\mathrm{H}}_2\right)$gas.

$$\begin{gathered} \mathrm{C}\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to (\mathrm{CO}(\mathrm{g})+{\mathrm{H}}_2(\mathrm{g}\left)\right) \\ \mathrm{Carbon}\mathrm{Steam}\mathrm{Water}\mathrm{gas} \end{gathered}$$

• This mixture of $(\mathrm{CO}+{\mathrm{H}}_2)$ is called water gas.

Therefore option is B the correct answer.