Write balanced equations and name the products formed when:

(a) Sodium hydrogen carbonate is added to nitric acid

(b) cupric oxide reacts with nitric acid

(c) zinc reacts with dilute nitric acid

(d) concentrated nitric acid is heated

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1 Answers

(a) When Sodium hydrogen carbonate is added to nitric acid sodium nitrate, carbon dioxide and water is formed.

NaHCO3 + HNO3 → NaNO3 + H2O + CO2

(b) When Cupric oxide reacts with dilute nitric acid, it forms Copper nitrate.

CuO + 2HNO3 → Cu(NO3)2 + H2O

(c) Zinc reacts with nitric acid to form Zinc nitrate, nitric oxide and water.

3 Zn + 8HNO3 → 3Zn(NO3)2 + 4H2O + 2NO

(d) 4HNO3 → 2H2O + 4NO2 + O2

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