Which of the following is`//`are disproportionation redox changes?A. `(NH_(4))_(2) Cr_(2)O_(7) rarr N_(2)+Cr_(2)O_(3)+4 H_(2)O`B. `5H_(2)O_(2)+2 ClO_(2)+2 overset(ɵ)(OH) rarr 2 Cl +overset(ɵ)(%)O_(2)+6H_(2)O`C. `3 ClO^(ɵ) rarr ClO_(3)^(ɵ)+Cl^(ɵ)`D. `2HCuCl_(2) overset("Dilution")underset("with water")(rarr) Cu+Cu^(2+)+4Cl+.^(ɵ)2H^(o+)`

Which of the following is`//`are disproportionation redox changes?A. `

1.	Which of the following is`//`are disproportionation redox changes?A. `(NH_(4))_(2) Cr_(2)O_(7) rarr N_(2)+Cr_(2)O_(3)+4 H_(2)O`B. `5H_(2)O_(2)+2 ClO_(2)+2 overset(ɵ)(OH) rarr 2 Cl +overset(ɵ)(%)O_(2)+6H_(2)O`C. `3 ClO^(ɵ) rarr ClO_(3)^(ɵ)+Cl^(ɵ)`D. `2HCuCl_(2) overset("Dilution")underset("with water")(rarr) Cu+Cu^(2+)+4Cl+.^(ɵ)2H^(o+)`
Answer» Correct Answer - C::D (c) `2e^(-) + ClO^(Θ) rarr Cl^(Θ)` (Reduction) `x -2 = -1 " " x = -1` `x = +1` `ClO^(Θ) rarr ClO_(3)^(Θ) + 4e^(-)` (Oxidation) `x = 1 " " x = 5` (d) In `HCuCl_(2), Cu` is in +1 oxidation state which disproportionates to `Cu^(2+) and Cu^(0)`

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