Question

Reaction of acid with base results in formation of salt and water. This reaction is called neutralisation reaction.
During the following reaction decide the pH value and conclusion of the aqueous solution of salts.

	Type of Acid	Type of Base	pH of aqueous solution of salt
$\left(1\right)$	Strong acid	Strong base	Neutral
$\left(2\right)$	Strong acid	Weak base	Acidic
$\left(3\right)$	Weak acid	Strong base	Basic

(P) pH$=7$ (Q) pH $<7$ (R) pH $>7$

• A. $1$-P, $2$-Q, $3$-R
• B. $1$-Q, $2$-P, $3$-R
• C. $1$-P, $2$-R, $3$-Q
• D. $1$-R, $2$-P, $3$-Q

Answer 1

Answer: (A)

$1$-P, $2$-Q, $3$-R

Neutralisation of strong acid with strong base results in neutral salt. The pH of aqueous solution of salt $=7$. Such salts do not undergo hydrolysis.
Neutralisation of strong acid with weak base results in acidic salt. The pH of aqueous solution of salt $<7$. The pH of such solution is due to the hydrolysis of cation.
Neutralisation of weak acid with strong base results in basic salt. The pH of aqueous solution of salt $>7$. The pH of such solution is due to the hydrolysis of anion.