Question

In the manufacture of hydrogen from water gas $(CO+H_2)$, which of the following is correct statement?

• A. Hydrogen is isolated by diffusion
• B. $H_2$ is removed by occlusion with pd
• C. CO and $H_2$ are separated based on difference in their densities
• D. CO is oxidized to $C{O}_2$ with steam in the presence of a catalyst followed by absorption of $C{O}_2$ in alkali

Answer 1

The correct option is D CO is oxidized to $C{O}_2$ with steam in the presence of a catalyst followed by absorption of $C{O}_2$ in alkali

The statement (D) is the correct statement.
$CO$ is oxidized to $C{O}_2$ with steam in the presence of a catalyst followed by absorption of $C{O}_2$ in water.
$\underset{\text{water gas}}{CO+H_2}+\underset{\text{steam}}{H_{2}O}\underset{\text{773 K}}{\overset{F{e}_2{O}_3\text{+}C{r}_2{O}_3}{\to }}C{O}_2\uparrow +2H_2$
$C{O}_2$ is removed by dissolving it in water under pressure (20-25) atm and hydrogen left behind is collected.