Hydrogen is manufactured by 'Bosch Process'.

(a) Give the equations with conditions.

(b) How can you obtain hydrogen from a mixture of Hydrogen and carbon monoxide?

(a) Steam is passed over hot coke (1000°C) in furnaces of a special design, called converters, giving water gas.

$\underset{\text{hot coke}}{\text{C}} + \underset{\text{steam}}{\text{H}$2\text{O}} \xrightarrow{1000 \degree \text{C}} \underset{\text{water gas}}{[\text{CO} + \text{H}2 ]} - \Delta

The reaction is endothermic.

(b) Water gas i.e., hydrogen and carbon monoxide is mixed with excess steam and passed over heated ferric oxide, which acts as a catalyst and chromic oxide Cr₂O₃ which acts as a promoter.

$\underset{\text{water gas}}{[\text{CO} + \text{H}$2 ]} + \underset{\text{steam}}{\text{H}2\text{O}} \xrightarrow[450 \degree \text{C}]{\text{Fe}2\text{O}3} \text{CO}2 + 2\text{H}2 + \Delta