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If a salt solution containing Fe^(2+) is...

If a salt solution containing `Fe^(2+)` is not treated with a few drops of `HNO_(3)` before starting for group III the ppt. obtained in group III will be

A

Oxidise any remaining `H_(2)S`

B

Convert ferrous ion into ferric ion

C

Form nitrates which give granular ppt

D

Increase ionisation of ammonium hydroxide

Text Solution

Verified by Experts

The correct Answer is:
B
`HNO_(3) ` oxidise `Fe^(2+)` to `Fe^(3+)` otherwise `Fe^(2+)` is not completely precipitated as hydroxide.
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