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Question

Which of the following displaces oxygen from water?


A

F2

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B

Cl2

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C

Br2

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D

I2

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Solution

The correct option is A

F2


Explanation for correct option:

A. F2

  • In the electrochemical series, the ones having higher negative electrode potential are the stronger oxidizing agents.
  • FluorineF lies above in that series which means it is a stronger oxidizing agent.
  • Displacement of oxygen from water basically means the oxidation of oxygen present in the water molecule.
  • The oxidation of an atom can be done by the atom which is a much stronger oxidizing agent.
  • Among the given halogens, Fluorine has the tendency of gaining electrons due to higher negative reduction potential and hence it displaces oxygen from water by a vigorous reaction.

Explanation for incorrect options:

Fluorine displaces oxygen from water. Thus, options B, C, and D are incorrect.

Hence, the correct option is A i.e. F2.


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