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Solution of a salt in dilute H(2)SO(4) o...

Solution of a salt in dilute `H_(2)SO_(4)` or acetic and produces deep blue colour with starch iodide solution. The salt contains :

A

`NO_(2)^(-)`

B

`I^(-)`

C

`NO_(3)^(-)`

D

`CH_(3)COO^(-)`

Text Solution

Verified by Experts

The correct Answer is:
A
`2Naunderline(NO_(2)) + H_(2)SO_(4) to Na_(2)SO_(4) + ul(2HNO_(2)) `
`2KI + H_(2)SO_(4) + ul(2HNO_(2)) to K_(2)SO_(4) + 2H_(2)O + 2NO + ul(I_(2))`
`ul(I_(2))` + Strach `to` Blue colour .
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