Question

The almost of zinc required to produce 224ml of H2 at STP on treatment with dilute H2SO4 will be(Zn=65)

Answer 1

Solution :

Zinc reacts with sulfuric acid according to the following formula :

Zn+H2SO4→ZnSO4+H2Zn+H2SO4→ZnSO4+H2

Therefore 1 mole of zinc reacts to give 1 mole of hydrogen

Volume of 1 mole of hydrogen at STP is 224000ml224000ml

1 mole of Zn is 65 grams

Therefore 0.65 grams of zinc reacts to give 224 ml of hydrogen

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