Regents Chemistry Test Preparation Practice

    Voltaic Cell

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10

    Base your answers to questions 11 on the information below and on your knowledge of chemistry.

    An operating voltaic cell has magnesium and silver electrodes. The cell and the ionic equation representing the reaction that occurs in the cell are shown below.

    voltaic-cell fig: chem62019-exam_g17.png

    11

    Base your answers to questions 12 on the information below and on your knowledge of chemistry.

    A student constructs an electrochemical cell. A diagram of the operating cell and the unbalanced ionic equation representing the reaction occurring in the cell are shown below.

    The blue color of the solution in the copper half-cell indicates the presence of Cu2+ ions. The student observes that the blue color becomes less intense as the cell operates.

    voltaic-cell fig: chem12019-exam_g14.png

    12

    Base your answers to questions 13 on the information below and on your knowledge of chemistry.

    The diagram and ionic equation below represent an operating voltaic cell.

    voltaic-cell fig: chem82019-exam_g11.png

    13

    Base your answers to questions 14 on the information below and on your knowledge of chemistry.

    A student sets up a voltaic cell using magnesium and zinc electrodes. The porous barrier in the cell has the same purpose as a salt bridge. The diagram and the ionic equation below represent this operating cell.

    chemical-reactions-and-equations fig: chem12018-exam_g17.png

    14

    Base your answers to questions 15 on the information below and on your knowledge of chemistry.

    A student constructs an electrochemical cell during a laboratory investigation. When the switch is closed, electrons flow through the external circuit. The diagram and ionic equation below represent this cell and the reaction that occurs.

    voltaic-cell fig: chem62017-exam_g23.png

    15