Chemistry 1302A/B Chapter Notes - Chapter 4: Fluorine, Electronegativity, Overpotential

• School: Western University
• Department: Chemistry
• Course: Chemistry 1302A/B
• Professor: Christina Booker

Document Summary

How to assign oxidization numbers: priority list. Example: reactions of fe with hcl: 1. Must equal to zero in a neutral species: 4. Must equal to charge in polyatomic ion: 5. In compounds: a. fluorine is always -1, b. 1 for each c bond with less electronegative atom (h: b. +1 for each c bond with more electronegative atom (o, cl: c. 0 for each c bonded to a c. Make sure that the electrons are on opposite sides of the two half- reactions. If the half-reactions have different numbers of electrons, multiply one or both half-reactions by a coefficient that results in electron parity: add the balanced half-reactions, cancel species as required, and check for. Disproportionation reactions overall balance: some of reactant is oxidized, some is reduced, common for metals with more than 1 cation . Consider zn reacting with cu2: energy of electron transfer is lost as heat.