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The reaction, 2K(2)MnO(4) + Cl(2) rarr 2...

The reaction, `2K_(2)MnO_(4) + Cl_(2) rarr 2KMnO_(4) + 2KCl` is an example of -

A

Oxidation

B

Reduction

C

Redox

D

Chlorination

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The correct Answer is:
To determine the type of reaction represented by the equation `2K2MnO4 + Cl2 → 2KMnO4 + 2KCl`, we will analyze the oxidation states of the elements involved in the reaction. ### Step-by-Step Solution: 1. **Identify the Reactants and Products**: - Reactants: `2K2MnO4` and `Cl2` - Products: `2KMnO4` and `2KCl` 2. **Assign Oxidation States**: - For `K2MnO4`: - Potassium (K) has an oxidation state of +1. - Oxygen (O) has an oxidation state of -2. - Let the oxidation state of Manganese (Mn) be X. - The equation for the oxidation state becomes: \[ 2(+1) + X + 4(-2) = 0 \implies 2 + X - 8 = 0 \implies X = +6 \] - Thus, Mn in `K2MnO4` is in the +6 oxidation state. - For `Cl2`: - Chlorine (Cl) in its elemental form has an oxidation state of 0. - For `KMnO4`: - Again, K is +1, O is -2, and let the oxidation state of Mn be Y. - The equation becomes: \[ +1 + Y + 4(-2) = 0 \implies 1 + Y - 8 = 0 \implies Y = +7 \] - Thus, Mn in `KMnO4` is in the +7 oxidation state. - For `KCl`: - K is +1 and Cl is -1. 3. **Determine Changes in Oxidation States**: - Manganese changes from +6 (in `K2MnO4`) to +7 (in `KMnO4`): - This is an **oxidation** (increase in oxidation state). - Chlorine changes from 0 (in `Cl2`) to -1 (in `KCl`): - This is a **reduction** (decrease in oxidation state). 4. **Conclusion**: - Since both oxidation and reduction are occurring in this reaction, it is classified as a **redox reaction**. ### Final Answer: The reaction `2K2MnO4 + Cl2 → 2KMnO4 + 2KCl` is an example of a **redox reaction**.
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MOTION-OXIDATION & REDUCTION -OXIDATION NUMBER ( EXERCISE -1)
  1. According to modern concept, oxidation is -

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  2. Oxidation takes place with -

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  3. The reaction, 2K(2)MnO(4) + Cl(2) rarr 2KMnO(4) + 2KCl is an example o...

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  4. In the reaction 3Br(2) + 6CO(3)^(2-) + 3H(2)O to 5Br^(-) + 2BrO(3)^(...

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  5. The oxidation number of carbon in C(12) H(22) O(11) is

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  6. When SO(2) is passed through acidified K(2)Cr(2)O(7) solution, Cr(2)(S...

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  7. In the reaction 2Na(2)S(2)O(3)+I(2) rarr Na(2)S(4)O(6)+2NaI, the oxida...

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  8. White P reacts with caustic soda (NaOH) forming PH(3) and NaH(2)PO(2)....

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  9. The reaction Co(s) + Cu^(2+)(aq) rarr Co^(2+)(aq) + Cu(s) is-

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  10. A redox reaction is:

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  11. A,B and C are three elements forming part of a compound in oxidation s...

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  12. The conversion of sugar C(12)H(22)O(11) to CO(2) is :

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  13. Oxidation is defined as-

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  14. The oxidation state of iodine in H(4)IO(6)^(-) is:

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  15. In acidic medium, reaction MnO(4)^(-) hArr Mn^(2+) is an example of -

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  16. In the reaction MnO(4)^(-)+SO(3)^(-2)+H^(+)rarrSO(4)^(-2)+Mn^(2+)+H(2)...

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  17. Which one of the following is not a redox reaction :-

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  18. The charge on cobalt in [Co(CN)(6)]^(-3) is -

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  19. Which of the following is not a redox change ?

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  20. Which of the following halogen always show only one oxidation state -

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