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An aqueous solution FeSO(4).Al(2)(SO(4))...

An aqueous solution `FeSO_(4).Al_(2)(SO_(4))_(3)` and chrome alum is heated with excess of `Na_(2)O_(2)` and fltered. The materials obtained are

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

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) TIPS`//` FORMULAE`:` Chrome alum is `K_(2)SO_(4).Cr_(2)(SO_(4))_(3).24H_(2)O`. The filtrate is yellow due to `CrO_(4)^(2-)` ion and residue is brown due to `Fe(OH)_(3)`.
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