NEETChemistryGeneral Organic Chemistry
Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?
Options
- ANitric acid is added to decompose NaCN to HCN and Na 2 S to H 2 S and to expel these gases. That is, if any ni
- BNitric acid is added to increase the pH of the solution, which enhances the solubility of halide precipitates
- CNitric acid is added to react with any remaining halogens in the sodium extract, converting them to soluble ni
- DNitric acid is added to react with silver nitrate, forming a complex that improves the sensitivity of the test
Correct answer
A. Nitric acid is added to decompose NaCN to HCN and Na 2 S to H 2 S and to expel these gases. That is, if any ni
Step-by-step solution
Correct Option is : (A) Nitric acid is added to decompose NaCN to HCN and Na 2 S to H 2 S and to expel these gases. That is, if any nitrogen and sulphur are present in the form of NaCN and Na 2 S, then they are removed and only halogens are available for testing.