S Block Elements Question 281

Question: Ferric alum has the composition $ {{(NH_4)}_2}SO_4.Fe_2{{(SO_4)}_3}.xH_2O $

[Orissa JEE 2002]

Options:

A) 7

B) 24

C) 6

D) 15

Show Answer

Answer:

Correct Answer: B

Solution:

Ferric alum is $ {{(NH_4)}_2}SO_4.Fe_2{{(SO_4)}_3}.24H_2O $

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