Which substance/ion is oxidised and which substance/ion is reduced in the following reaction?
$M n O_{2} + 4 H C l \to M n C l_{2} + 2 H_{2} O + C l_{2}$ .

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Solution

$M n O_{2} + 4 H C l \to M n C l_{2} + 2 H_{2} O + C l_{2}$ .
Oxidised- $H C l$ . The oxidation number of Cl increases from -1 to 0. Thus, Cl itself is oxidised and acts as reducing agent.
Reduced- $M n O_{2}$ The oxidation number of Mn decreases from +4 to +2. Thus, Mn itself is reduced and acts as oxidising agent.

Note:
Any species that is oxidised acts as reducing agent.
Any species that is reduced acts as oxidising agent.

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Similar questions

Q. The substance that is oxidised in the following chemical reaction is:

M n O_{2} + 4 H C l \to M n C l_{2} + 2 H_{2} O + C l_{2}

Identify the substance oxidized, substance reduced, oxidising agent and reducing agent.
$M n O_{2}$ + $4 H C l$ $\to$ $M n {C l}_{2}$ + $2 H_{2} O$ + ${C l}_{2}$ .

Q. State which substance is getting oxidised and reduced in the following equation:
MnO₂+ 4HCl -> MnCl₂+ 2H₂O + Cl₂

Q. Which substance/ion is oxidised and which substance/ion is reduced in the following reaction?

2 I^{-} + C l_{2} \to 2 C l^{-} + I_{2}

Q. Identify the substance oxidized,substance reduced ,oxidizing agent and reducing agent :

M n O_{2} + 4 H C L \to M n C l_{2} + 2 H_{2} O + C l_{2}

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Which substance/ion is oxidised and which substance/ion is reduced in the following reaction?MnO2+4HCl→MnCl2+2H2O+Cl2.

Which substance/ion is oxidised and which substance/ion is reduced in the following reaction?
$M n O_{2} + 4 H C l \to M n C l_{2} + 2 H_{2} O + C l_{2}$ .