CHEM 120 Lecture Notes - Lecture 19: Lithium Battery, Molybdenum Disulfide, Magnetic Core

• School: McGill University
• Department: Chemistry
• Course: CHEM 120
• Professor: Laura Pavelka

Document Summary

Lecture notes chapter 19: redox: movement of electrons from one reactant to another, oxidation is loss of electrons, and reduction is gain of electrons, always paired together. Increases across period and decreases down group : oxidizing agent: causes oxidation in another species (is reduced, reducing agent: causes reduction in another species (is oxidized, thus, mg(s) and h2(g) would be reducing agents. If more oxygen in reactants, add h+ to reactants and water to products: add two reactions together, multiply each reaction by factor so that both have same # electrons, add oh- to cancel out h+ Oxidation number of cl in hclo4 is +7. If oxidizing agent, means being reduced, so oxidation number goes towards more negative: don"t need to balance equation to find oxidizing and reducing agents. Inactive electrode: inert conductor electrodes, immersed in electrolyte (platinum, graphite: notation: oxidation reactant | oxidation product || reduction reactant | reduction product.