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Identify the oxidant and reductant in th...

Identify the oxidant and reductant in the following redox reaction:
`2K_(2)MnO_(4)+CI_(2)rarr2KCI+2KMnO_(4)`

A

Oxidation of potassium manganate is taking place.

B

Reduction of potassium manganate is taking place.

C

Oxidation of `Cl_(2)` is taking place.

D

`Cl_(2)` acts as reducing agent in the reaction.

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The correct Answer is:
To identify the oxidant and reductant in the given redox reaction: **Reaction:** \[ 2K_{2}MnO_{4} + Cl_{2} \rightarrow 2KCl + 2KMnO_{4} \] ### Step 1: Identify the oxidation states of manganese in K₂MnO₄ and KMnO₄. 1. **For K₂MnO₄:** - Let the oxidation state of manganese (Mn) be \( x \). - The oxidation states of potassium (K) is +1 and oxygen (O) is -2. - The equation for the oxidation state is: \[ 2(+1) + x + 4(-2) = 0 \] - Simplifying this gives: \[ 2 + x - 8 = 0 \implies x - 6 = 0 \implies x = +6 \] - Thus, the oxidation state of Mn in K₂MnO₄ is +6. 2. **For KMnO₄:** - Let the oxidation state of manganese (Mn) be \( y \). - The equation for the oxidation state is: \[ +1 + y + 4(-2) = 0 \] - Simplifying this gives: \[ 1 + y - 8 = 0 \implies y - 7 = 0 \implies y = +7 \] - Thus, the oxidation state of Mn in KMnO₄ is +7. ### Step 2: Determine the change in oxidation state for manganese. - The oxidation state of Mn changes from +6 in K₂MnO₄ to +7 in KMnO₄. - Since the oxidation state increases, Mn is **oxidized**. ### Step 3: Identify the oxidation state of chlorine in Cl₂ and KCl. 1. **For Cl₂:** - The oxidation state of chlorine in its elemental form (Cl₂) is 0. 2. **For KCl:** - The oxidation state of chlorine in KCl is -1. ### Step 4: Determine the change in oxidation state for chlorine. - The oxidation state of Cl changes from 0 in Cl₂ to -1 in KCl. - Since the oxidation state decreases, Cl is **reduced**. ### Step 5: Identify the oxidant and reductant. - The substance that gets oxidized (loses electrons) acts as the **reducing agent**. Here, K₂MnO₄ is oxidized, so it is the **reducing agent**. - The substance that gets reduced (gains electrons) acts as the **oxidizing agent**. Here, Cl₂ is reduced, so it is the **oxidizing agent**. ### Conclusion: - **Oxidant (oxidizing agent)**: Cl₂ - **Reductant (reducing agent)**: K₂MnO₄

To identify the oxidant and reductant in the given redox reaction: **Reaction:** \[ 2K_{2}MnO_{4} + Cl_{2} \rightarrow 2KCl + 2KMnO_{4} \] ### Step 1: Identify the oxidation states of manganese in K₂MnO₄ and KMnO₄. 1. **For K₂MnO₄:** ...
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