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NH4 CNS can be used to test one or more ...

`NH_4 CNS` can be used to test one or more out of `Fe^(3+), Co^(2+), Cu^(2+)e`

A

`Fe^(3+)` only

B

`Co^(2+),Cu^(2+)`

C

`Fe^(3+),Cu^(2+)`

D

All

Text Solution

Verified by Experts

`CoCl_(2)+4NH_(4)CNS overset("ether")tounderset("in ethereal layer")underset("Blue colour")((NH_(4))_(2)[Co(CNS)_(4)])+2NH_(4)Cl`
`FeCl_(3) +3NH_(4)CNS to underset("Blood red colour")(Fe(CNS)_(3))+3NH_(4)Cl`
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