(B) Acidic $KMnO_4$ is a strong oxidizing agent. It gets decolorized by reducing agents. Among the given options,the sulfide ion $(S^{2-})$ acts as a

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(B) Acidic $KMnO_4$ is a strong oxidizing agent. It gets decolorized by reducing agents. Among the given options,the sulfide ion $(S^{2-})$ acts as a reducing agent. The reaction is: $5S^{2-} + 2MnO_4^- + 16H^+ \rightarrow 5S + 2Mn^{2+} + 8H_2O$. Since $S^{2-}$ is oxidized to $S$,the purple color of $MnO_4^-$ disappears.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

Medium

Which of the following ions decolorizes acidic $KMnO_4$ solution?

A
$SO_4^{2-}$
B
$S^{2-}$
C
$NO_3^-$
D
$CH_3COO^-$

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Redox Reactions

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Mix Examples-Redox Reactions

$KMnO_4$ oxidises $S_2O_3^{2-}$ to $SO_4^{2-}$ in medium $x$ and $NO_2^-$ to $NO_3^-$ in medium $y$. $x$ and $y$ are respectively:

EasyAP EAMCET 2019

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In the reaction of phosphorus with concentrated $HNO_3$,the oxidized and reduced products respectively are

MediumAP EAMCET 2022

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$

Medium

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When $KMnO_4$ reacts with acidified $FeSO_4$,which of the following occurs?

Difficult

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Assign $A, B, C, D$ from the given type of reaction.
$Mn(OH)_2 + H_2SO_4 \longrightarrow MnSO_4 + 2H_2O$

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Which of the following ions decolorizes acidic $KMnO_4$ solution?

Similar Questions

$KMnO_4$ oxidises $S_2O_3^{2-}$ to $SO_4^{2-}$ in medium $x$ and $NO_2^-$ to $NO_3^-$ in medium $y$. $x$ and $y$ are respectively:

In the reaction of phosphorus with concentrated $HNO_3$,the oxidized and reduced products respectively are

Assign $A$,$B$,$C$,$D$ from the given type of reaction.$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$

When $KMnO_4$ reacts with acidified $FeSO_4$,which of the following occurs?

Assign $A, B, C, D$ from the given type of reaction.$Mn(OH)_2 + H_2SO_4 \longrightarrow MnSO_4 + 2H_2O$

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$

Assign $A, B, C, D$ from the given type of reaction.
$Mn(OH)_2 + H_2SO_4 \longrightarrow MnSO_4 + 2H_2O$