Which of the following compound is added to the sodium extract before the addition of silver nitrate for testing of halogens?

Which of the following compound is added to the sodium extract before the addition of silver nitrate for testing of halogens?

a. Nitric acid

b. Sodium hydroxide

c. Hydrochloric acid

d. Ammonia

Answer: (a)

NaCN + HNO3 → NaNO3 + HCN ↑

Na2S + HNO3 → NaNO3 + H2S ↑

Nitric acid decomposes NaCN & Na2S, else they precipitate in test & misguide the resolve.

Was this answer helpful?

 
   

0 (0)

(0)
(0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

Ask
Question