Electrolytic Cells

What is an electrolytic cell?

• A cell with a positive cell voltage

• A cell that has a salt-bridge connection

• A cell with a negative cell voltage

• A cell with a spontaneous redox reaction

What does a positive cell voltage mean?

• The reaction is nonspontaneous.

• The reaction is spontaneous.

• The reaction requires added energy.

• The reaction will never occur.

Which of the following is an electrolytic cell?

• Silver (Ag) oxidized, gold (Au) reduced

• Aluminum (Al) oxidized, zinc (Zn) reduced

• Lithium (Li) oxidized, zinc (Zn) reduced

• Iron(II) (Fe) oxidized, aluminum (Al) reduced

What is the total reduction potential of a cell in which potassium (K) is reduced and copper (Cu) is oxidized?

• -3.27 V

• -2.59 V

• 3.27 V

• 2.59 V

How is an electrolytic cell different from a galvanic cell?

• The anode in an electrolytic cell is reduced.

• Galvanic cells have a voltage source added.

• Electricity does not flow in an electrolytic cell.

• Electrons flow in the opposite direction.

What is true of both galvanic and electrolytic cells?

• Reduction happens at the anode.

• They are nonspontaneous.

• They are spontaneous.

• Oxidation happens at the anode.

What gets heavier in an electrochemical cell?

• The anode

• Negative ions

• The salt bridge

• The cathode

Which electrode gets heavier in an electrolytic cell?

• The electrode that is being oxidized

• The electrode that is donating electrons

• The electrode where reduction occurs

• The electrode with the higher reductive potential

Which metal gets coated during electroplating?

• The metal that is the cathode

• The metal that is the anode

• The metal with ions coming off it

• The metal with electrons flowing from it

Which of the following cells would you use to electroplate silver (Ag) on iron (Fe)?

• A galvanic cell

• A voltaic cell

• An electrolytic cell

• A dry cell