Electrolytic Cells

What is the main process occurring in an electrolytic cell?

• Chemical energy is converted into electrical energy.

• Electrical energy is converted into chemical energy.

• Thermal energy is converted into chemical energy.

• Mechanical energy is converted into electrical energy.

Which of Faraday's laws states that the amount of substance deposited at an electrode is proportional to the amount of electricity used?

• Faraday's first law of electrolysis

• Faraday's second law of electrolysis

• Ohm's law

• Coulomb's law

Tags

NGSS.HS-PS2-5

Which of the following is a commercial application of electrolytic cells?

• Alkaline batteries

• Electroplating

• Fuel cells

• Solar cells

What is the main difference between galvanic cells and electrolytic cells?

• Galvanic cells require an external power source, while electrolytic cells do not.

• Electrolytic cells require an external power source, while galvanic cells do not.

• Galvanic cells can only operate under acidic conditions.

• Electrolytic cells can only operate under basic conditions.

What is the half equation for the oxidation process at the anode during the electrolysis of molten sodium chloride?

During the electrolysis of water, what is the half equation at the cathode?

What is the product at the cathode during the electrolysis of molten potassium chloride?

• Potassium

• Chlorine

• Hydrogen

• Oxygen

Which of the following is a correct representation of Faraday's second law of electrolysis?

• The amounts of different substances liberated by the same quantity of electricity are proportional to their chemical equivalent weights.

• The amount of substance deposited at an electrode is directly proportional to the current applied.

• The efficiency of electrolysis increases with the increase in temperature.

• The amount of energy required for electrolysis decreases with the increase in the concentration of the electrolyte.

Which statement is correct?

• Electrons flow in the external circuit from A to B

• Positive ions flow through salt bridge from A to B

• Positive ions flow in external circuit from B to A.

• Electrons flow through salt bridge from B to A

Tags

NGSS.HS-PS2-5

If the fork is to be electroplated with silver metal, what electrolyte should be used?

• Molten calcium chloride

• Aqueous silver nitrate

• Sodium chloride solution

• Copper(II) sulphate solution