AP MCQ 09GHIJ PART 1

  • Questions 01-02:

    For Questions 01-02 consider the two standard reduction potentials shown below.

    Cu2+ + 2e- → Cu (+0.34V)

    H+ + e- → ½H2 (0.00V)

    Question 01:

    If the two half-cells below were combined in a standard, galvanic cell, what would be the correct chemical equation to represent the spontaneous REDOX process?

  • Question 02:

    If the two half-cells were combined in a galvanic cell, what would be the voltage generated the spontaneous REDOX process?


  • Question 03:

    What is always true of all electrolysis processes?


  • Question 04:

    The metal indium, is known to exist in an oxidation state of +3. What approximate mass of indium (molar mass = 114.82 g) will be produced during the electrolysis of a molten salt that contains In3+, if a current of 10.0 amps is passed through the electrolyte for a period of 50.0 hours?


  • Question 05:

    The purpose of the salt-bridge in a galvanic cell is


  • Question 06:

    Which combination of values for ΔG°, Keq and E°, is the most likely?


  • Question 07:

    In a simple galvanic cell constructed from the two half-cells shown below,

    Cu2+(aq) + 2e- → Cu(s) +0.34V
    Zn2+(aq) + 2e- → Zn(s) -0.76 V


  • Questions 08-10:

    Use the following data for Questions 08-10 . The electrolysis of molten sodium chloride yields different products than the electrolysis of aqueous sodium chloride. The relevant standard electrode potentials are shown below.

    Question 08:

    The standard electrode potentials alone, predict that the products from the electrolysis of aqueous sodium chloride should be H2 gas and O2 gas, but it is found that in many situations, the actual products are chlorine gas and hydrogen gas. What is the most likely explanation for this observation?

  • Question 09:

    What is the product at the cathode when molten sodium chloride is electrolyzed?

  • Question 10:

    When considering the four reaction reactions listed in the table, it would appear that the reduction of Cl2 gas to chloride ions is the most reduction likely to occur. Why is Cl2 gas not reduced at the beginning of the electrolysis of either aqueous, or molten NaCl?


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