SELECT * FROM question_mgmt as q WHERE id=2856 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=50 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidised or reduced.

Answer:

The reaction between fluorine and water can be represented as:

2F2(g)     +    2H2O(I)    →     4H+(aq)  +  4F-(aq)   +  O2(g)

This is an example of a redox reaction as water is getting oxidized to oxygen, while fluorine is being reduced to fluoride ion.

The oxidation numbers of various species can be represented as:

Fluorine is reduced from zero to (-1) oxidation state. A decrease in oxidation state indicates the reduction of fluorine. Water is oxidized from (-2) to zero oxidation state. An increase in oxidation state indicates oxidation of water.

 


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