Chapter 18: Electrochemistry

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Across
  1. 4. an instrument that measures cell potential by drawing electric current through a known resistance
  2. 5. a galvanic cell in which both compartments contain the same components, but at different concentrations
  3. 6. the “pull” or driving force on the electrons
  4. 11. a platinum conductor in contact with 1 M H+ ions and bathed by hydrogen gas at one atmosphere
  5. 12. a constant representing the charge on one mole of electrons: 96,485 coulombs
  6. 16. the potential of a half-reaction under standard state conditions, as measured against the potential of the standard hydrogen electrode
  7. 22. the process for producing chlorine and sodium hydroxide by electrolyzing brine in a mercury cell
  8. 24. a cell that uses electrical energy to produce a chemical change that would otherwise not occur spontaneously
  9. 25. a method in which an active metal such as magnesium, is connected to steel to protect it from corrosion
  10. 27. a galvanic cell for which the reactants are continuously supplied
  11. 28. an equation relating the potential of an electrochemical cell to the concentrations of the cell components: at 25ºC
Down
  1. 1. the study of the interchange of chemical and electrical energy
  2. 2. electrodes that are sensitive to the concentration of a particular ion
  3. 3. the unit of electrical potential defined as one joule of work per coulomb of charge transferred
  4. 7. the electrode compartment in which oxidation occurs
  5. 8. a battery (used in cars) in which the anode is lead, the cathode is lead coated with lead dioxide, and the electrolyte is a sulfuric acid solution
  6. 9. a process in which steel is coated with zinc to prevent corrosion
  7. 10. a U-tube containing an electrolyte that connects the two compartments of a galvanic cell, allowing ion flow without extensive mixing of the different solutions
  8. 13. unit of electric current equal to one coulomb of charge per second
  9. 14. a device in which chemical energy is changed to electrical energy
  10. 15. a process that involves forcing a current through a cell to cause a non spontaneous chemical reaction to occur
  11. 17. the electrode compartment in which reduction occurs
  12. 18. a disk in a tube connecting two different solutions in a galvanic cell that allows ion flow without extensive mixing of the solutions
  13. 19. an electrode for measuring pH from the potential difference that develops when it is dipped into an aqueous solution containing H+ ions
  14. 20. a group of galvanic cells connected in series
  15. 21. a common battery used in calculators, watches, radios, and portable audio players
  16. 23. the process by which metals are oxidized in the atmosphere
  17. 26. a cell used for electrolyzing molten sodium chloride