CHEM 103 Lecture Notes - Lecture 15: Standard Hydrogen Electrode, Galvanic Cell, Oxidizing Agent
Document Summary
Unit 14 part 2 electrochemistry (tro textbook chapter 18) Electrochemistry the study of the interchange of chemical and electrical energy. Oil rig oxidation is loss, reduction is gain (of electrons) Oxidation the loss of electrons, increase in charge. Reduction the gain of electrons, reduction of charge. Oxidation number the assigned charge on an atom. Oxidizing agent (oa) the species that is reduced and thus causes oxidation. Reducing agent (ra) the species that is oxidized and thus causes reduction. Balancing redox reactions under acidic and basic conditions. In unit 4 we learned to write and balance half reactions for redox reactions. Here, we will explore redox reactions that occur under acidic or basic conditions. These are more complicated to balance because the acid, base and/or water can all be involved in the reaction. + fe2+ mn2+ + fe3+ [acidic] 2 (aq) + hno2 (aq) cr3+ (aq) + no3.
