Question

What is an example of a balanced half reaction?

Answer 1

Oxidation of `NH_3` to `NO_3^-`?

`N^(-III)` is oxidized to `N^(+V)`

Explanation:

`NH_3 + 3H_2O rarr NO_3^(-) + 8e^(-) + 9H^+`

Is this balanced with respect to mass and charge? If not, it should be. All I did was account for the difference in oxidation numbers by electrons, and then add water or `H^+` to balance oxygen and hydrogen.