[qwertqwert]

The question:

Balance the following skeleton reactions and identify the oxidizing
and reducing agents:

O₂(g) + NO(g) -> NO₃^- (aq) [acidic]

My question:

I understand which ones are the oxidizing and reducing agents, but I'm confused on how to balance this.

The answer is supposed to be: 3O₂(g) + 4NO(g) + 2H₂O(l) -> 4NO3^-(aq) + 4H⁺


Here is what I've done (You can ignore this if you want) :

1.

NO -> NO₃^-

O2 -> 2H2O

2.

NO + 2H2O -> NO3-

O2 -> 2H2O

3.

NO + 2H2O -> NO3- + 4H+

O2 + 4H⁺ -> 2H2O

4.

NO + 2H2O -> NO3- + 4H+ 3e-

O2 + 4H⁺ + 2e- -> 2H2O

5. Finally, I balanced the electrons by multiplying each rxn, and I ended up with:


3O2 + 4H+ + 2NO --> 2H20 + 2NO3-


I'd really appreciate any input on this.

Thanks!

[AWK]

O2 + 4H+ + 2e- -> 2H2O

Wrong charge balance

[qwertqwert]

Figured it out now lol

Thanks a lot!!