Sodium extract is heated with concentrated HNO3 before testing for halogens because :

Question

Sodium extract is heated with concentrated HNO3 before testing for halogens because : (A) Ag2S and AgCN are soluble in acidic medium. (B) Silver halides are totally insoluble in nitric acid. (C) S2 - and CN- , if present, are decomposed by conc. HNO3 and hence do not interfere in the test. (D) Ag reacts faster with halides in acidic medium

Tardigrade Admin · Accepted Answer

S2 - and CN- ions if present are decomposed by conc. HNO3 and hence do not interfere in the test.

Q. Sodium extract is heated with concentrated $H N O_{3}$ before testing for halogens because :

$A g_{2} S$ and AgCN are soluble in acidic medium.

Silver halides are totally insoluble in nitric acid.

$S^{2 -}$ and $C N^{-}$ , if present, are decomposed by conc. $H N O_{3}$ and hence do not interfere in the test.

Ag reacts faster with halides in acidic medium

$S^{2 -}$ and $C N^{-}$ ions if present are decomposed by conc. $H N O_{3}$ and hence do not interfere in the test.

Q. Sodium extract is heated with concentrated HNO3​ before testing for halogens because :

Ag2​S and AgCN are soluble in acidic medium.