Question

The pH of 0.1 M solution of the following solutions increase in the order:

• A. $HCl<N{H}_{4}Cl<NaCl<NaCN$
• B. $NaCl<N{H}_{4}Cl<NaCl<HCl$
• C. $NaCl<N{H}_{4}Cl<NaCl<HCl$
• D. $HCl<NaCl<NaCN<N{H}_{4}Cl$

Answer 1

The correct option is A $HCl<N{H}_{4}Cl<NaCl<NaCN$

NaCN is a basic salt, NaCl is neutral, NH₄Cl is an acidic salt and HCl is an acid.