CHEM 1A03 Lecture Notes - Lecture 5: Intensive And Extensive Properties, Electromotive Force, Standard Electrode Potential
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CHEM 1A03 Full Course Notes
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Negative oxidation number wants to loose electrons. Positive oxidation number wants to gain electrons. Reducing agent causes something to get reduced or gain electrons; reducing agent provides the electrons and therefore gets oxidized itself. Oxidizing agent causes something to get oxidized or loose electrons; therefor gains. Thermite reaction: iron molten production spot welding; highly exothermic. Element in substance gets both oxidized and reduced and therefore acts as both the oxidizing and reducing agent. Hydrogen peroxide: used as topical antiseptic that can oxidize microbes. Keep half reactions separate; connected by a salt bridge. Electrolytic cell: uses electricity to accomplish a non-spontaneous reaction; used in electroplating of metals. Standard electrode potentials electrochemical cell operating under standard conditions. Standard cell potential o is the max. electric potential difference of an. O is the energy difference between the cathode and anode. Second half of the cell represents the half-cell of the species for which we"re.