For the reaction shown, identify the oxidation half-reaction and the reduction half-reaction. KNO3 → KNO2 + O₂ Which pair of half-reactions represents the balanced half-reactions? N5+ + 2e →N³+ 0² →0₂ + 4e 2N5+ + 4e¯ → 2N³+ 20²- → 0₂ +4e 4N5+ 2e4N³+ 20² → 20₂ + 4e¯