Question

Which one of the following is correct for salt buffer ?

• A. A solution of the salt of weak acid and weak base in water.
• B. A solution of the salt of strong acid and weak base in water.
• C. A solution of the salt of weak acid and strong base in water.
• D. None of the above

Answer 1

The correct option is A A solution of the salt of weak acid and weak base in water.

A solution of the salt of weak acid and weak base in water is called salt buffer.
for example-
Ammonium Cyanide $\left(N{H}_{4}CN\right)$ solution is a salt of weak acid $\left(HCN\right)$ and weak base $\left(N{H}_{4}OH\right)$ in water.