Which one of halogen oxidizes water to oxygen with large evolution of heat?
Which one of halogen oxidizes water to oxygen with large evolution of heat?
A. `F_(2)`
B. `Cl_2`
C. `Br_(2)`
D. `I_(2)`
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Correct Answer - A
F atoms are reduced to `F^(-)`
`2F_(2)+2H_(2)O to 4HF+O_(2)+"Heat"`
`3F_(2)+3H_(2)O to 6HF+O_(3)+"Heat"`
A similar relation of chlorine with `H_(2)O` occurs, but the reaction is very slow, because the energy of activation is high.
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