A) \[NaCl<N{{H}_{4}}Cl<NaCN<HCl\]
B) \[HCl<N{{H}_{4}}Cl<NaCl<NaCN\]
C) \[NaCN<N{{H}_{4}}Cl<NaCl<HCl\]
D) \[HCl<NaCl<NaCN<N{{H}_{4}}Cl\]
Correct Answer: D
Solution :
\[N{{H}_{4}}Cl\]undergoes cationic hydrolysis hence, pH is > 7 because the solution due to cationic hydrolysis is acid.\[NaCN\] undergoes anionic hydrolysis hence, pH is > 7.\[HCl\]is strong acid and\[NaCl\]is neutral solution. Hence, the pH of given solutions will increases. \[HCl<NaCl<NaCN<N{{H}_{4}}Cl\]
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