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Sodium extract is heated with concentrat...

Sodium extract is heated with concentrated `HNO_(3)` before testing for halogens because:

A

Ag reacts faster with halides in acidic medium.

B

Silver halides are totally insoluble in nitric acid.

C

`Ag_(2)S` and AgCN are soluble in acidic medium.

D

`S(2-) " and" CN^(-)`, if present, are decomposed by conc. `HNO_(3)` and hence do not interfere in the test.

Text Solution

Verified by Experts

The correct Answer is:
D
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