An aqueous solution of FeSO_4,Al_2(SO_4)_3 an | vedclass

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(C) When the mixture is heated with excess $Na_2O_2$ (a strong oxidizing agent),the following reactions occur:$1$. $Fe^{2+}$ is oxidized to $Fe^{3+}$,

Vedclass · Accepted Answer

$A$ yellow filtrate and a brown residue

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(C) When the mixture is heated with excess $Na_2O_2$ (a strong oxidizing agent),the following reactions occur:$1$. $Fe^{2+}$ is oxidized to $Fe^{3+}$,which then precipitates as brown $Fe(OH)_3$.$2$. $Al^{3+}$ forms soluble $[Al(OH)_4]^-$ (aluminate) in the filtrate.$3$. $Cr^{3+}$ (from chrome alum) is oxidized to $CrO_4^{2-}$ (chromate),which is yellow and soluble in the filtrate.Therefore,the filtrate contains $CrO_4^{2-}$ (yellow) and $[Al(OH)_4]^-$,while the residue contains $Fe(OH)_3$ (brown).

List-$I$	List-$II$
$A$. $Co^{2+}$	$I$. Yellow colour
$B$. $Fe^{2+}$	$II$. Dark green colour
$C$. $Ni^{2+}$	$III$. Blue colour
$D$. $Cu^{2+}$	$IV$. Pale green colour
	$V$. Pink colour

List-$I$ (Aquated Ion)	List-$II$ (Colour)
$A. Ni^{2+}$	$I. \text{Violet}$
$B. Fe^{3+}$	$II. \text{Blue}$
$C. Mn^{3+}$	$III. \text{Yellow}$
$D. V^{4+}$	$IV. \text{Red}$
	$V. \text{Green}$

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

Similar Questions

Match the following:
List-$I$ List-$II$
$A$. $Co^{2+}$ $I$. Yellow colour
$B$. $Fe^{2+}$ $II$. Dark green colour
$C$. $Ni^{2+}$ $III$. Blue colour
$D$. $Cu^{2+}$ $IV$. Pale green colour
$V$. Pink colour

The correct answer is

The oxidation number of $Mn$ in the product of alkaline oxidative fusion of $MnO_2$ is

Which Lanthanoid compound is used as a pigment?

Match the following:

List-$I$ (Aquated Ion) List-$II$ (Colour)

$A. Ni^{2+}$ $I. \text{Violet}$

$B. Fe^{3+}$ $II. \text{Blue}$

$C. Mn^{3+}$ $III. \text{Yellow}$

$D. V^{4+}$ $IV. \text{Red}$

$V. \text{Green}$

When $Cu^{2+}$ ion is treated with $KI$,a white precipitate,$X$ appears in solution. The solution is titrated with sodium thiosulphate,the compound $Y$ is formed. $X$ and $Y$ respectively are

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