CHM 1311 Lecture Notes - Lecture 3: Electronegativity, Fluorine, Boron

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 1311
• Professor: Darrin Richeson

Document Summary

Redox reactions involve the movement of electrons from one reactant to another (less en to more. A formation of a bond can indicate the transfer of electrons. Theses two processes happen at the same time (one atom/molecule loses an electron while another gains) You must balance electrons as well as atoms. If electrons are being lost by one species, then they must be gained by another. #of electrons gained = number of electrons lost. We use half reactions to separate the reaction into oxidation and reaction. We use the oxidation number to keep track of the number of electrons that have been gained or lost by an element. The hypothetical charge that an atom would have if it was an ion. Nonmetals (except o) and other halogens lower in the group. Reduction: cu(2+) + 2e- ---> cu + zn(2+) 8h + mno4 ---> mn(2+) + 4h2o +5e- 8h + c2o4(2-) ---> mn(2+) +co2 +4h2o +5e-