CHEM 1062 Lecture 21: chapter 21 lecture notes
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Chapter 21: electrochemistry acids/bases - equilibrium involved moving a proton. In redox - equilibrium involves moving an electron. Cu^2 gains electrons = reduced (think charge becomes more negative) Oxidizing agent = one that is going to do the oxidation on the other one, therefore it is being reduced; one that gains electrons while making the other lose electrons cu^2+(aq) Reducing agent = one that reduces the other species while being oxidized; it loses electrons while making the other gain electrons (zn(s)) You can divide the reaction into 2 = half reactions. Redox reaction do not necessarily involve metals. Any reaction with oxygen - all combustions - = redox reactions. There is a formal transfer of electrons. Oxidation numbers used to make sure the total amount of electrons is right (formalism but does not give you actual charges of an atom in a molecule) On = book keeping method of tracking e-
