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Hydrogen

Long Answer Type

71.

What is water gas? How will you prepare hydrogen from water gas?
Or
How is dihydrogen prepared on a commercial scale?

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Short Answer Type

72. What do you understand by the term syngas?

474 Views

73.

How can the production of dihydrogen, obtained from 'coal gasification' be increased?

331 Views

74.

What do you understand by the term:
water-gas shift reaction.

878 Views

75.

How will you prepare hydrogen commercially from hydrocarbons?
Or
What is understood by ‘water gas shift reaction’? Discuss its use for the preparation of hydrogen.

113 Views

76.

Describe the bulk preparation of hydrogen by an electrolytic method. What is the role of electrolyte in this process?
Or
How is dihydrogen manufactured by the electrolysis of water?

393 Views

77.
How is dihydrogen manufactured by Lane's process?

Lane's process consists of two stages:

(i) Oxidation stage: Super -heated steam is passed over iron filings, at 1023-1073 K when dihydrogen is formed.

(ii) Reduction stage: Iron is regenerated by reducing magnetic oxide with water gas (CO + H₂). This reaction is called vivification.

Thus, by passing steam and water gas alternatively over iron, dihydrogen gas can be manufactured from a small quantity of iron.