Which of the following is a disproportionation reaction?

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Cu2O+2H⊕⟶Cu+Cu2++H2O

2CrO42−+2H⊕⟶Cr2O72−+H2O

CaCO3+2H⊕⟶Ca2++H2O+CO2

Cr2O72−+2O⊝H⟶2CrO42−+H2O

answer is A.

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Detailed Solution

if an element of the species undergoes both oxidation and reduction then it is called as disproportionation reaction

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