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ICSE Class 10 Answered

Give balanced chemical reactions of sulphuric acid with following reactants:  i)  Zinc sulphide ii) Sodium sulphite iii) Sodium bisulphate
Asked by Topperlearning User | 21 Apr, 2016, 10:01: AM
answered-by-expert Expert Answer

i) Sulphuric acid evolves hydrogen sulphide from metal sulphides.

ZnS  + H2SO4 →ZnSO4 +H2S

ii) Sulphuric acid evolves sulphur dioxide from sulphites

Na2SO3 +H2SO4 → Na2SO4 + H2O + SO2

iii) Sulphuric acid evolves sulphur dioxide from hydrogen sulphites.

2NaHSO3 +H2SO4 → Na2SO4 + 2H2O + 2SO2

Answered by | 21 Apr, 2016, 12:01: PM

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