1.

Give balanced equations for the decomposition of(1) calcium bicarbonate by dil. HCl,(2) calcium carbonate by dil. HNO3 ,(3) sodium sulphite by dil. H2SO4 ,(4) zinc sulphide by dil. H2SO4 . 

Answer»

1. Ca(HCO3)2 + 2HCl → CaCl2 + 2H2O+ 2CO2 

2. CaCO3 + 2HNO3 → Ca(NO)2 + H2O+ CO2

3. Na2SO3 + H2SO4 (dil.) → Na2SO4 + H2O+ SO2

4. ZnS + H2SO4  → ZnSO4 + H2



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