the lab preparation of hydrogen how is the gas collected and why
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Hydrogen gas is prepared in laboratory by the action of dilute HCl upon granulated zinc. ... The hydrogen gas thus formed is collected in a gas jar through delivery tube by the downward displacement of water. Purification: The hydrogen gas thus obtained may contain different impurities like H2S, NO2, CO2, moisture etc.
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Answer:
Downward displacement of Water
Explanation:
Hydrogen is collected by downward displacement of water as it is less denser than water. Hence it comes out at the surface of water . It is insoluble in water so it does not dissolve in water.
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