D And F Block Elements Question 358
Question: A compound of iron exists as a dimer in vapour state. It is hygroscopic in nature and dissolves in water giving brown acidic solution. The compound is
Options:
A) $ Fe_3O_4 $
B) $ FeSO_4 $
C) $ FeCl_3 $
D) $ FeO_2 $
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Answer:
Correct Answer: C
Solution:
The solution is acidic due to formation of $ HCl $ and brown due to $ Fe{{( OH )}_3}. $ $ FeCl_3+3H_2O\to \underset{Brown}{\mathop{Fe{{(OH)}_3}}},+3HCl $
BETA
