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Question

BrO3 changes into Br2 in an acidic medium of a unbalanced equation. How many electron should be present in the balanced equation?

A
3 electrons in right
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B
10 electrons in left
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C
3 electrons in left
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D
6 electrons in left
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Solution

The correct option is B 10 electrons in left
The governing chemical reaction is:

12H++10e+2BrO3Br2+6H2O

Above reaction shows that 10 electrons are required in left side.
Hence, option (a) is correct.

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