1.

In the chemical change aN_(2)H_(4)+bBrO_(3)^(-)toaN_(2)+bBr^(-)+6H_(2)O, answer the following questions: Thenumber of electrons lost or gained during the redox change are:

Answer»

8<BR>10
12
6

Solution :`[(N^(2-))_2 rarrN_2^(0)+4E]xx3`
`[Br^(5+)+6erarrBr^(-)]xx2`


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