Question

The compound whose $0.1M$ solution is basic is

• A. Ammonium acetate
• B. Ammonium Chloride
• C. Ammonium sulphate
• D. Sodium acetate

Answer 1

The correct option is D

Sodium acetate

$0.1M$ solution of sodium acetate is basic due to hydrolysis of acetate ion-

$C{H}_{3}CO{O}^{-}+H_{2}O\rightleftharpoons C{H}_{3}COOH+O{H}^{-}$

If the salt has a strong conjugate base, its solution will be basic. A similar logic could be extended to the acid. This is only with respect to SA + WB or WA + SB salt combinations.