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Harris Chapter 15 Review 1

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  • T/F pH electrodes sensitivity to H+ is not based on Redox reactions
    True
    False
  • In the standard notation for a voltaic cell, the double vertical line "||" represents:
    a phase boundary
    a salt bridge
    a standard hydrogen electrode
    gas electrode
  • In voltaic cells, such as those diagrammed in your text, the salt bridge _______ .
    is not necessary in order for the cell to work
    is tightly plugged with firm agar gel through which ions can
    allows charge balance to be maintained in the cell
    acts as a mechanism to allow mechanical mixing of the soluti
  • Which one of the following is the strongest reducing agent
    Cl-
    F-
    Br-
    I-
  • The half-reaction that occurs at the anode during the electrolysis of molten sodium bromide is:
    Na <===> Na+ + e-
    2 Br- <===>Br2 + 2 e-
    Br2 + 2 e-<===> 2 Br-
    2 H2O <===> 2 OH- + H2
  • Which of the following statements is FALSE?
    All voltaic (galvanic) cells involve the use of electricity
    Oxidation and reduction half-reactions occur at electrodes i
    Oxidation occurs at the anode.
    Reduction occurs at the cathode.
  • T/F - Ion selective electrodes are unaffected by color or turbidity of the solution
    True
    False
  • Which of the following is not the characteristic of ion selective electrodes
    inexpensive
    Narrow concentration range
    Simple to use
    Operates in a wide range of temperatures