A) it is stronger acid
B) sulphates are less soluble than chlorides
C) sulphates are more soluble than chlorides
D) \[HCl\] is a gas while\[{{H}_{2}}S{{O}_{4}}\] is a liquid
Correct Answer: D
Solution :
Gas (\[HCl,\]more volatile) can be displaced more easily from the chloride salt solution by \[{{H}_{2}}S{{O}_{4}}\] which is less volatile. \[NaCl+\underset{\begin{smallmatrix} less \\ volatile \end{smallmatrix}}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\xrightarrow[{}]{{}}NaHS{{O}_{4}}+\underset{\begin{smallmatrix} more \\ volatile \end{smallmatrix}}{\mathop{HCl}}\,\]
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