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Give reasons : Concentrated H2SO4 cannot be used instead of dilute H2SO4 in laboratory preparation of hydrogen gas why ?
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19 votes
19 votes
Give reasons :

Concentrated H2SO4 cannot be used instead of dilute H2SO4 in laboratory preparation of hydrogen gas why ?

User Kakadu
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1 Answer

23 votes
23 votes
Because concentrated sulfuric acid is a strong oxidizer, so it has to be in water to react with metals and produce hydrogen properly. Sometimes dilute sulfuric acid is used, but that is another story
User Alex Mantaut
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