CHEM 105bL Chapter Notes - Chapter 18: Standard Electrode Potential, Standard Hydrogen Electrode, Electrochemical Cell
Document Summary
Oxidation corresponds to an increase in oxidation state and reduction corresponds to a decrease in oxidation. Lose e- oxidation, gain e- reduction (leo the lion says ger) state. Voltaic/galvanic cells: generating electricity from spontaneous chemical reactions. The flow of electric charge is known as the electrical current which is measured in amperes (a) The generation of electricity through redox reactions is normally carried out in a device called an electrochemical cell. A voltaic/galvanic cell is an electrochemical cell that produces electrical current from a spontaneous chemical reaction. An electrolytic cell is an electrochemical cell that consumes electrical current to drive a nonspontaneous chemical reaction negatively charged than the y electrode. There are two half reactions: (cid:1850)(cid:4666)(cid:4667) (cid:1850)+(cid:4666)(cid:4667)+ and (cid:1851)(cid:4666)(cid:4667) (cid:1851)+(cid:4666)(cid:4667)+ . Because x has a greater tendency to oxidize ((cid:1850)(cid:4666)(cid:4667) (cid:1850)+(cid:4666)(cid:4667)+ ) than y, the x electrode becomes more. Oxidation occurs at the anode and reduction occurs at the cathode (an ox, red cat)
