Which reaction does not represent auto redox or disproportionation ?
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a
Cl2+OH−⟶Cl−+ClO3−+H2O
b
2H2O2⟶H2O+O2
c
2Cu+⟶Cu2++Cu
d
NH42Cr2O7⟶N2+Cr2O3+4H2O
answer is D.
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Detailed Solution
NH42Cr2O7⟶N2+Cr2O3+4H2O This is not disproportination or Auto redox reaction due to ammonium dichromate on strong heating to give N2 and chromic oxide.