Question

The compound whose aqueous solution has the highest $PH$ is

• A. $NaCl$
• B. $NaHC{O}_3$
• C. $N{a}_{2}C{O}_3$
• D. $N{H}_{4}Cl$

Answer 1

Answer: (C)

The hydrolysis of $NaCl$ gives neutral solution because it is salt of strong acid and strong base and hence, its $pH$ is $7.N{H}_{4}Cl$ is salt of weak base and strong acid, so its $pH$ is less than $7.NaHC{O}_3$ is also acidic whereas $N{a}_{2}C{O}_3$ is salt of strong base and weak acid, so its $pH$ is more than $7$ .