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A compound of iron exists as a dimer in ...

A compound of iron exists as a dimer in vapour state. It is hygroscopic in nature and disolves in water giving brown acidic solution. The compound is

A

`Fe_(3)O_(4)`

B

`FeSO_(4)`

C

`FeCl_(3)`

D

`FeO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
The solution is acidic due to formation of HCl and brown due to `Fe(OH)_(3)`
`FeCl_(3) + 3H_(2)O rarr underset(" Brown")(Fe(OH)_(3)) + 3HCl`
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