Analytical Chemistry Question 221
Question: An aqueous solution of $ FeSO_4,Al_2{{( SO_4 )}_3} $ and chrome alum is heated with excess of $ Na_2O_2 $ and filtered. The materials obtained are
[IIT 1996]
Options:
A) A colourless filtrate and a green residue
B) A yellow filtrate and a green residue
C) A yellow filtrate and a brown residue
D) A green filtrate and a brown residue
Show Answer
Answer:
Correct Answer: C
Solution:
Yellow filtrate is due to chromate ions $ (CrO_4^{–}) $ and green residue is due to $ Fe{{(OH)}_2} $ .
BETA
