Question

In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement ?

• A. CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali.
• B. CO and H2 are fractionally separated using differences in their densities.
• C. CO is removed by absorption in aqueous Cu2Cl2 solution.
• D. H2 is removed through occlusion with Pd.

Answer 1

Answer: (A)

CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali.

Answer 2

CO + H2 + H2O(g) $\underset{Catalyst}{\overset{\quad 673k\quad}{\rightarrow}}$ CO2(g) + 2H2(g),

CO2 + 2NaOH $\rightarrow$Na2CO3 + H2O