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Question
Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.
| Salt | Method of preparation |
| Zinc Sulphate | Precipitation |
| Ferrous sulphide | Oxidation |
| Barium Sulphate | Displacement |
| Ferric sulphate | Neutralisation |
| Sodium sulphate | Synthesis |
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Solution
Zinc Sulphate – Displacement
\[\ce{Zn + H2SO4 -> ZnSO4 + H2\uparrow}\]
Ferrous sulphide – Synthesis
\[\ce{Fe + S ->[\Delta] FeS}\]
Barium sulphate – Precipitation
\[\ce{BaCl2 + H2SO4 -> BaSO4\downarrow + 2HCl}\]
Ferric sulphate – Oxidation
\[\ce{4FeO + O2 -> 2Fe2O3}\]
Sodium sulphate – Neutralisation
\[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2\uparrow}\]
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