Question

which metal is preferred for preparation of hydrogen?
number 1: from water ?
number 2 : from acid ?

Answer 1

Zinc is prefered for the preparation of hydrogen from water

Answer 2

Metals preferred as raw materials for preparation of hydrogen

• Hydrogen is a gaseous element which can be prepared from water as well as acid with metals.

Hydrogen from water

• In case of acid, it can be prepared by treating the metals such as zinc granules with dilute sulfuric acid.
• This leads to the formation of hydrogen gas along with zinc sulfate as by-product.
• Apart from zinc, metals such as magnesium, aluminium and iron are also preferred for the process.

Hydrogen from acid

• In case of water, hydrogen can be prepared by using metal such as calcium.
• When calcium is mixed with distilled water, it liberates hydrogen gas and calcium hydroxide as by-product.

• Apart from calcium, metals such as potassium and sodium are also preferred for the process.

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