Qualitative Analysis - Result Question 18
An aqueous solution $FeSO_4 \cdot Al_2(SO_4)_3$ and chrome alum is heated with excess of $Na_2O_2$ and filtered. The materials obtained are
(1996, 1M)
(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 brown residue
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Answer:
Correct Answer: 18. (c)
Solution:
Yellow filtrate contains $Cr_2O_7^{2-}$ and brown residue contains $Fe_2O_3$.
BETA
