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1. Define redox reactions. 

2. Predict whether the following reaction is a redox reaction or not? Justify. 

Cr2O72- + H2O → 2CrO2-4 + 2H+

1 Answer

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1. Redox reactions are those reactions are those reactions in which reduction and oxidation occur simultaneously. These reactions involve change in oxidation state of the interacting species.

2. No. Because no element undergoes change in oxidation number.

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