In qualitative analysis, in III group NH 4 Cl is added before NH 4 OH because

Question

In qualitative analysis, in III group NH 4 Cl is added before NH 4 OH because (A) to increase the concentration of NH 4 +ions (B) to increase concentration of Cl -ions (C) to reduce the concentration of OH -ions (D) to increase concentration of OH -ions

Tardigrade Admin · Accepted Answer

Due to common ion effect addition of NH 4 Cl in group (III) suppresses the ionisation of NH 4 OH with the result, concentration of OH -decreases.

Q. In qualitative analysis, in III group $N H_{4} Cl$ is added before $N H_{4} O H$ because

to increase the concentration of $N H_{4}^{+}$ ions

to increase concentration of $C l^{-}$ ions

to reduce the concentration of $O H^{-}$ ions

to increase concentration of $O H^{-}$ ions

Due to common ion effect addition of $N H_{4} Cl$ in group (III) suppresses the ionisation of $N H_{4} O H$ with the result, concentration of $O H^{-}$ decreases.

Q. In qualitative analysis, in III group NH4​Cl is added before NH4​OH because

to increase the concentration of NH4​+ions

to increase concentration of Cl−ions

to reduce the concentration of OH−ions

to increase concentration of OH−ions