Assertion: Assertion: In the third group of qualitative analysis, NH 4 Cl is added to NH 4 OH medium. Reason: This is to convert the ions of group into their respective chlorides.

Question

Assertion: Assertion: In the third group of qualitative analysis, NH 4 Cl is added to NH 4 OH medium. Reason: This is to convert the ions of group into their respective chlorides. (A) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion. (B) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. (C) If the Assertion is correct but Reason is incorrect. (D) If the Assertion is incorrect and Reason is correct.

Tardigrade Admin · Accepted Answer

NH 4 Cl suppresses the ionisation of NH 4 OH due to common ion effect and concentration of OH -ions is just sufficient to precipitate third group radicals as hydroxide. IV group hydroxides, having high Ks p, are not precipitated.

Q. Assertion : Assertion : In the third group of qualitative analysis, $N H_{4} Cl$ is added to $N H_{4} O H$ medium.
Reason : This is to convert the ions of group into their respective chlorides.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If the Assertion is incorrect and Reason is correct.

$N H_{4} Cl$ suppresses the ionisation of $N H_{4} O H$ due to common ion effect and concentration of $O H^{-}$ ions is just sufficient to precipitate third group radicals as hydroxide. IV group hydroxides, having high $K_{s p}$ , are not precipitated.

Q. Assertion : Assertion : In the third group of qualitative analysis, NH4​Cl is added to NH4​OH medium. Reason : This is to convert the ions of group into their respective chlorides.