Question

The reaction between chloride salts and concentrated sulfur acid

Select one: 

forms sulfur dichloride

liberates oxygen 

forms water

liberates hydrogen chloride

Answer 1

The reaction between chloride salt and concentrated sulphuric acid -

Answer :- liberates hydrogen chloride

1

Explanation :-

When chloride sallt \(\mathrm{NaCl}\) (or \(\mathrm{MgCl}_{2}\) ) reacts with conc. sulphuric acid \(\mathrm{H}_{2} \mathrm{SO}_{4}\) it gives sodium sulphate (or magnesium sulphate) and liberates hydrogen chloride gas.

\(2 \mathrm{NaCl}_{(s)}+\mathrm{Conc.H}_{2} \mathrm{SO}_{4(l)} \rightarrow \mathrm{Na}_{2} S O_{4(s)}+2 \mathrm{HCl}_{(g)} \uparrow\)

or

\(\mathrm{MgCl}_{2(s)}+\) Conc. \(\mathrm{H}_{2} \mathrm{SO}_{4(l)} \rightarrow \mathrm{MgSO}_{4(s)}+2 \mathrm{HCl}_{(g)} \uparrow\)