(A) $1$. In acidic medium,$MnO_4^{-}$ oxidizes $I^{-}$ to $I_2$: $2MnO_4^{-} + 10I^{-} + 16H^{+} \rightarrow 2Mn^{2+} + 5I_2 + 8H_2O$. Thus,$X = I_2$.

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(A) $1$. In acidic medium,$MnO_4^{-}$ oxidizes $I^{-}$ to $I_2$: $2MnO_4^{-} + 10I^{-} + 16H^{+} \rightarrow 2Mn^{2+} + 5I_2 + 8H_2O$. Thus,$X = I_2$.$2$. In neutral or weakly basic medium,$MnO_4^{-}$ oxidizes $I^{-}$ to $IO_3^{-}$: $2MnO_4^{-} + I^{-} + H_2O \rightarrow 2MnO_2 + IO_3^{-} + 2OH^{-}$. Thus,$Y = IO_3^{-}$.$3$. In the presence of $ZnSO_4$ (which acts as a buffer),$MnO_4^{-}$ reacts with $Mn^{2+}$ to form $MnO_2$: $2MnO_4^{-} + 3Mn^{2+} + 2H_2O \rightarrow 5MnO_2 + 4H^{+}$. Thus,$Z = MnO_2$.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

Difficult

$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{H^{+}} X + Mn^{2+}(aq.)$
$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{\text{Neutral or weakly } OH^{-}} Y + MnO_2$
$MnO_4^{-}(aq.) + Mn^{2+}(aq.) \xrightarrow{ZnSO_4} Z + 4H^{+}$
Products $X, Y$ and $Z$ are respectively :

A
$I_2, IO_3^{-}, MnO_2$
B
$IO_3^{-}, I_2, MnO_2$
C
$I_2, IO_3^{-}, MnO_4^{2-}$
D
$IO_3^{-}, I_2, MnO_4^{2-}$

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Class 11

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Redox Reactions

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Mix Examples-Redox Reactions

Given below are two statements.
Statement-$I$: In the decomposition of potassium chlorate,$Cl$ is reduced.
Statement-$II$: Reaction of $Na$ with $O_2$ to form $Na_2O$ is a redox reaction.
The correct answer is

MediumAP EAMCET 2024

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Match the reactions in Column $I$ with the nature of the reactions/type of the products in Column $II$.

Column $I$ Column $II$

$A$. $O_2^{-} \rightarrow O_2 + O_2^{2-}$ $p$. redox reaction

$B$. $CrO_4^{2-} + H^{+} \rightarrow$ $q$. one of the products has trigonal planar structure

$C$. $MnO_4^{-} + NO_2^{-} + H^{+} \rightarrow$ $r$. dimeric bridged tetrahedral metal ion

$D$. $NO_3^{-} + H_2SO_4 + Fe^{2+} \rightarrow$ $s$. disproportionation

IIT 2007

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Which of the following reactions are redox reactions?
$I. \, Cr_2O_7^{2-} + 2OH^- \to 2CrO_4^{2-} + H_2O$
$II. \, Zn + CuSO_4 \to ZnSO_4 + Cu$
$III. \, 2MnO_4^- + 3Mn^{2+} + 4OH^- \to 5MnO_2 + 2H_2O$
$IV. \, 2Cu^+ \to Cu + Cu^{2+}$

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When an acidic solution of $K_2Cr_2O_7$ is added to $Na_2SO_3$,it turns green. Which of the following compounds is formed in this reaction?

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Which of the following reactions represents a redox reaction involving water?

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Column $I$	Column $II$
$A$. $O_2^{-} \rightarrow O_2 + O_2^{2-}$	$p$. redox reaction
$B$. $CrO_4^{2-} + H^{+} \rightarrow$	$q$. one of the products has trigonal planar structure
$C$. $MnO_4^{-} + NO_2^{-} + H^{+} \rightarrow$	$r$. dimeric bridged tetrahedral metal ion
$D$. $NO_3^{-} + H_2SO_4 + Fe^{2+} \rightarrow$	$s$. disproportionation

$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{H^{+}} X + Mn^{2+}(aq.)$$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{\text{Neutral or weakly } OH^{-}} Y + MnO_2$$MnO_4^{-}(aq.) + Mn^{2+}(aq.) \xrightarrow{ZnSO_4} Z + 4H^{+}$Products $X, Y$ and $Z$ are respectively :

Similar Questions

Given below are two statements.Statement-$I$: In the decomposition of potassium chlorate,$Cl$ is reduced.Statement-$II$: Reaction of $Na$ with $O_2$ to form $Na_2O$ is a redox reaction.The correct answer is

Which of the following reactions are redox reactions?$I. \, Cr_2O_7^{2-} + 2OH^- \to 2CrO_4^{2-} + H_2O$$II. \, Zn + CuSO_4 \to ZnSO_4 + Cu$$III. \, 2MnO_4^- + 3Mn^{2+} + 4OH^- \to 5MnO_2 + 2H_2O$$IV. \, 2Cu^+ \to Cu + Cu^{2+}$

When an acidic solution of $K_2Cr_2O_7$ is added to $Na_2SO_3$,it turns green. Which of the following compounds is formed in this reaction?

Which of the following reactions represents a redox reaction involving water?

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$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{H^{+}} X + Mn^{2+}(aq.)$
$I^{-}(aq.) + MnO_4^{-}(aq.) \xrightarrow{\text{Neutral or weakly } OH^{-}} Y + MnO_2$
$MnO_4^{-}(aq.) + Mn^{2+}(aq.) \xrightarrow{ZnSO_4} Z + 4H^{+}$
Products $X, Y$ and $Z$ are respectively :

Given below are two statements.
Statement-$I$: In the decomposition of potassium chlorate,$Cl$ is reduced.
Statement-$II$: Reaction of $Na$ with $O_2$ to form $Na_2O$ is a redox reaction.
The correct answer is

Which of the following reactions are redox reactions?
$I. \, Cr_2O_7^{2-} + 2OH^- \to 2CrO_4^{2-} + H_2O$
$II. \, Zn + CuSO_4 \to ZnSO_4 + Cu$
$III. \, 2MnO_4^- + 3Mn^{2+} + 4OH^- \to 5MnO_2 + 2H_2O$
$IV. \, 2Cu^+ \to Cu + Cu^{2+}$