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How does hydrochloric acid react with (i) Zn, (ii) Na2CO3, (iii) Na2SO4? Give equation.

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How does hydrochloric acid react with (i) Zn, (ii) Na2CO3, (iii) Na2SO4? Give equation.

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(i) Hydrogen gas is liberated.

Zn + 2HCl → ZnCl2 + H2

(ii) Sodium carbonate is decomposed.

Na2CO3 + 2HCl → 2NaCl + H2O + CO2

(iii) Liberates sulphur dioxide from sodium sulphate.

Na2SO4 + 2HCl → 2NaCl + H2O + SO2.

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