Using whole number coefficients, how do we (a.) represent the oxidation of potassium metal by water; and (b.) represent the oxidation ammonia to give #NO_2#?
Well, I would balance
But you wanted whole number coefficients, so we double the creature to give..........
And for the oxidation of ammonia
Both equation are balanced with respect to mass and charge. Sometimes I find the half-integral coefficients useful in that it is easier to assess stoichiometry this way.
Are these redox reactions? Why or why not?