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Which of the following is a disproportio...

Which of the following is a disproportionation reaction?

A

`Cu_(2)O+2H^(+) to Cu+Cu^(2+)+H_(2)O`

B

`2CrO_(4)^(2-)+2H^(+) to Cr_(2)O_(7)^(2-)+H_(2)O`

C

`CaCO_(3)+2H^(+) to Ca^(2+)+H_(2)O+CO_(2)`

D

`Cr_(2)O_(7)^(2-)+2OH^(-) to 2CrO_(4)^(2-)+H_(2)O`

Text Solution

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The correct Answer is:
A
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Disproportionation Reactions

Oxidation reaction involves loss of electrons, and reduction reaction involves gain of electrons. The reaction in which a species disproportinates into two oxidation states ( lower and higher) is called disproportionation reaction. Which of the following is not a dispropotional reaction?

OP TANDON-OXIDATION AND REDUCTION (REDOX REACTIONS)-LEVEL A
  1. The oxidation state of 'S' in H(2)SO(4) is:

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  2. Which of the following is not a disproportionation reaction ?

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  3. Which of the following is a disproportionation reaction?

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  4. When KMnO(4) acts as an oxidising agnet and ultimetely from MnO(4)^(2-...

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  5. which of the following is a redox reaction ?

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  6. For decolourisation of 1 "mol of" KMnO(4), the moles of H(2)O(2) requi...

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  7. The reaction of KMnO(4) and HCI results in:

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  8. Consider the following reaction, 5H(2)O(2)+ClO(2)+2OH^(-) to Cl^(-)+...

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  9. In the chemical reaction, Ag(2)O+H(2)O+2e^(-) to 2Ag+2OH^(-)

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  10. The reaction, 2H(2)O(l) to 4H^(+)(aq.)+O(2)(g)+4^(-) is

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  11. Which of the following molecules can act as an oxidating as well as a ...

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  12. Which of the following is not a reducing agent ?

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  13. Equivalent mass of oxidizing agent in the reaction, SO(2)+2H(2)S rar...

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  14. Among these, identify the species with an atom in +6 oxidation state: ...

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  15. On reduction of KMnO(4) by oxalic acid in acidic medium, the oxidation...

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  16. The number of moles of K(2)Cr(2)O(7) reduced by 1 mol of Sn^(2+) ions ...

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  17. In the standardization of Na(2)S(2)O(3) using K(2)Cr(2)O(7) by iodomet...

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  18. In the balanced chemical reaction IO(3)^(ө)+al^(ө)+bH^(ө)rarrcH(2)O+...

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  19. In alkaline medium CIO(2) oxidises to H(2)O(2) and O(2) and itself get...

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  20. The oxidation number of xenon in XeOF(2) is

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