Chemistry

Hydrogen can be prepared with the metal zinc by using

(i) acid

(ii) alkali

(iii) water

Give an equation in each case.

Hydrogen

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Answer

(i) Zn + 2HCl ⟶ ZnCl2 (dil.) + H2

(ii) Zn + 2NaOH ⟶ Na2ZnO2 + H2

(iii) Zn + H2O ⟶ ZnO + H2

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