Chapter 20 - Oxidation-Reduction Reactions - 20 Assessment - Page 720: 37

a. H2 = Oxidized S= Reduced b. N2 = Reduced H2 = Oxidized c. S = Oxidized O2 = Reduced d. H2 = Oxidized O2 = Reduced

hydrogen has lost electrons OILRIG= Oxidation is Loss, Reduction is Gain N2 has gained electrons H has lost electrons Sulfur has lost electrons (+2) Oxygen has gained electrons (-2) Hydrogen has lost electrons Oxygen has gained electrons