(B) The balanced chemical equation for the reaction is: $2 KMnO_4 + 5 H_2S + 3 H_2SO_4 \rightarrow K_2SO_4 + 2 MnSO_4 + 5 S + 8 H_2O$ For $5$ moles of

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(B) The balanced chemical equation for the reaction is: $2 KMnO_4 + 5 H_2S + 3 H_2SO_4 \rightarrow K_2SO_4 + 2 MnSO_4 + 5 S + 8 H_2O$ For $5$ moles of $H_2S$,the stoichiometry remains the same as in the balanced equation. Thus,$x = 8$ moles of $H_2O$ are produced. In this redox reaction,$S^{2-}$ is oxidized to $S^0$ (loss of $2$ electrons per $H_2S$ molecule). For $5$ moles of $H_2S$,the total electrons involved $y = 5 \times 2 = 10$. Therefore,$(x + y) = 8 + 10 = 18$.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

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$H_2S$ ($5$ moles) reacts completely with acidified aqueous potassium permanganate solution. In this reaction,the number of moles of water produced is $x$,and the number of moles of electrons involved is $y$. The value of $(x+y)$ is. . . . . .

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A
$15$
B
$18$
C
$20$
D
$25$

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Redox Reactions

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Mix Examples-Redox Reactions

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$H_2O_2$ reduces $KMnO_4$ in acidic medium to '$x$' and in basic medium to '$y$'. What are $x$ and $y$?

MediumAP EAMCET 2025

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$200 \ mL$ of $x \times 10^{-3} \ M$ potassium dichromate $(K_2Cr_2O_7)$ is required to oxidise $750 \ mL$ of $0.6 \ M$ Mohr's salt $(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O)$ solution in acidic medium. Here $x =$ ?

DifficultJEE MAIN 2026

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Assign $A, B, C, D$ from the given type of reaction.
$KMnO_4 + NaNO_3 \longrightarrow$ No reaction

Medium

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Which of the following reactions does not involve either oxidation or reduction?

Medium

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In the following reaction,identify the oxidation states of the underlined phosphorus atoms in the products formed by complete hydrolysis at $R.T.$:
$H_4\underline{P}_2O_6 + H_2O \longrightarrow H_3PO_3 + H_3PO_4$

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$H_2S$ ($5$ moles) reacts completely with acidified aqueous potassium permanganate solution. In this reaction,the number of moles of water produced is $x$,and the number of moles of electrons involved is $y$. The value of $(x+y)$ is. . . . . .

Similar Questions

$H_2O_2$ reduces $KMnO_4$ in acidic medium to '$x$' and in basic medium to '$y$'. What are $x$ and $y$?

$200 \ mL$ of $x \times 10^{-3} \ M$ potassium dichromate $(K_2Cr_2O_7)$ is required to oxidise $750 \ mL$ of $0.6 \ M$ Mohr's salt $(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O)$ solution in acidic medium. Here $x =$ ?

Assign $A, B, C, D$ from the given type of reaction.$KMnO_4 + NaNO_3 \longrightarrow$ No reaction

Which of the following reactions does not involve either oxidation or reduction?

In the following reaction,identify the oxidation states of the underlined phosphorus atoms in the products formed by complete hydrolysis at $R.T.$:$H_4\underline{P}_2O_6 + H_2O \longrightarrow H_3PO_3 + H_3PO_4$

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Assign $A, B, C, D$ from the given type of reaction.
$KMnO_4 + NaNO_3 \longrightarrow$ No reaction

In the following reaction,identify the oxidation states of the underlined phosphorus atoms in the products formed by complete hydrolysis at $R.T.$:
$H_4\underline{P}_2O_6 + H_2O \longrightarrow H_3PO_3 + H_3PO_4$