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Which halogen...

Question

Which halogen reacts with $K H S O_{4}$ to form potassium per sulphate?

A

Cl

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B

Br

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C

I

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D

F

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Solution

The correct option is D F
Potassium per sulphate
$_{2}_{2}_{8}$
$o x i d a t i o n s t a t e o f S = + 7 i n K_{2} S_{2} O_{8}$ and
$i n K H S O_{4} = + 6$
F is the strongest oxidising agent thus fluorine reacts with $K H S O_{4}$ to form potassium per sulphate. The reaction is as follow:

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