Chemistry

Making use only of substances given: dil. sulphuric acid, Sodium carbonate, Zinc, Sodium Sulphite, Lead, Calcium carbonate:

Give equations for the reactions by which you could obtain:

(i) hydrogen

(ii) sulphur dioxide

(iii) carbon dioxide

(iv) zinc carbonate (2 steps)

Sulphuric Acid

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Answer

(i) Zn + H2SO4 [dil.] ⟶ ZnSO4 + H2

(ii) Na2SO3 + H2SO4 [dil.] ⟶ Na2SO4 + H2O + SO2

(iii) Na2CO3 + H2SO4 [dil.] ⟶ Na2SO4 + H2O + CO2

(iv) Zn + H2SO4 [dil.] ⟶ ZnSO4 + H2
ZnSO4 + Na2CO3 [dil.] ⟶ ZnCO3 + Na2SO4

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