The value of n in ` NO_3^(-) + 4H^(+) + n e^(-) rarr 2 H_2O + NO` is .
A. `2`
B. `4`
C. `5`
D. `3`
A. `2`
B. `4`
C. `5`
D. `3`
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Correct Answer – D
The given equation is balanced atomically . To balance it electrically , we add `3` dlectrons to the LHS.
`NO_3^(-) + 4H^(+) + 3e^(-) rarr 2H_2O + NO` .