Question

Which one of these salts will form a basic solution upon dissolving in water? cr(no3)3 libr nai nh4no3 naf?

Answer 1

Answer is: sodium fluoride NaF.
Sodium fluoride hydrolyse on strong base sodium hydroxide (NaOH) and weak acid hydrofluoric acid (HF), so water solution has pH greater that seven ant it is basic. Other salts have neutral or acidic pH value in water, because they hydrolyse on strong acid and weak or strong base.

Answer 2

Answer: $NaF$

Explanation:

When a weak acid and strong base reacts, it leads to the formation of a basic solution.

When a strong acid and weak base reacts, it leads to the formation of acidic solution.

When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of a neutral solution.

$NaF$ is made up of strong base $NaOH$ and a weak acid [tex}HF[/tex] , thus leading to formation of basic solution.