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Question

Fluorine reacts with ice and results as follows:
H2O(s)+F2(g)HF(g)+HOF(s)
Justify that this reaction is a redox reaction.

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Solution

The oxidation number of F2 changes from 0 to -1.
Thus, it is reduced. The oxidation number of oxygen changes from -2 to 0. Hence, it is oxidized. Thus, it is a redox reaction.

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