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Explain Briefly How Hydrogen is Manufactured on a Large Scale, from Steam. - Chemistry

Short Note

Explain briefly how hydrogen is manufactured on a large scale, from steam.

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Manufacture of H2 from steam:
From natural gas: Natural gas is obtained from petroleum wells and consists mainly CH4 (methane). It is mixed with steam at 30 atm. and passed over heated nickel 800°C, when water gas is formed.

\[\ce{CH4 + H2O (steam)->[Ni][800°C]\underset{\text{(water gas)}}{[CO + 3H2]}}\]

Separation of CO: The gaseous mixture of [CO and H2] is passed through ammonical cuprous chloride solution in order to dissolve uncombined CO.

\[\ce{CuCl + CO + 2H2O -> CuCl.CO.2H2O}\]

Thus hydrogen gas is left over.

Concept: Manufacture of Hydrogen
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Viraf J. Dalal Class 9 Simplified ICSE Chemistry
Chapter 6 Study Of The First Element — Hydrogen
Exercise | Q 5.2
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