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Solution of a salt in dil H(2)SO(4) prod...

Solution of a salt in dil `H_(2)SO_(4)` produces deep blue colour with starch iodide solution .The salt contains

A

`Br^(-)`

B

`I^(-)`

C

`Cl^(-)`

D

`NO_(2)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
D
Nitrite ion liberates `I_(2)` from potassium iodide turning starch blue.
`2NO_(2)^(-)+3l^(-)+4CH_(3)CO OH to l_(3)^(-) +2NO uarr +4CH_(3)CO O^(-)+2H_(2)O`
`l_(2)` + starch `to` blue colour
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RESONANCE ENGLISH-QUALITATIVE ANALYSIS (ANION)-Additional Problems for Self Practice (APSP)
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