Question

Give the preparation of the salt given in the left column by matching with the methods given in the right column. Write balanced equations for each preparation.

Salt	Method of preparation
Zinc sulphate Ferrous sulphide Barium sulphate Ferric sulphate Sodium sulphate	Precipitation Oxidation Displacement Neutralisation synthesis

Answer 1

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Salt	Method of preparation	Balanced Chemical Equation
Zinc sulphate	Displacement	$\mathrm{Zn}+\mathrm{dil}.{\mathrm{H}}_2{\mathrm{SO}}_4\stackrel{}{\to }{\mathrm{ZnSO}}_4+{\mathrm{H}}_2$
Ferrous sulphide	Synthesis	$\mathrm{Fe}+\mathrm{S}\stackrel{\mathrm{heat}}{\to }\mathrm{FeS}$
Barium sulphate	Precipitation	${\mathrm{BaCl}}_2+{\mathrm{H}}_2{\mathrm{SO}}_4\stackrel{\mathrm{Precipitation}}{\to }{\mathrm{BaSO}}_4+2\mathrm{HCl}$
Ferric sulphate	Oxidation	$2{\mathrm{FeSO}}_4+{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4+{\mathrm{H}}_2{\mathrm{O}}_2\stackrel{\mathrm{O}\mathrm{x}\mathrm{i}\mathrm{d}\mathrm{a}\mathrm{t}\mathrm{i}\mathrm{o}\mathrm{n}}{\to }\mathrm{F}{\mathrm{e}}_2(\mathrm{S}{\mathrm{O}}_4{)}_3+2{\mathrm{H}}_2\mathrm{O}$
Sodium sulphate	Neutralisation	$2\mathrm{NaOH}+\mathrm{dil}.{\mathrm{H}}_2{\mathrm{SO}}_4\to {\mathrm{Na}}_2{\mathrm{SO}}_4+2{\mathrm{H}}_2\mathrm{O}$