W2 Apr S4 Pure Chem Electrolysis 4 Simple Cells

What type of energy conversion occurs in a simple cell and in an electrolytic cell? Select the two correct options.

• An electrolytic cell converts chemical energy to electrical energy.

• An electrolytic cell converts electrical energy to chemical energy.

• A simple cell converts chemical energy to electrical energy.

• A simple cell converts electrical energy to chemical energy

Identify which electrode is the cathode and anode, and the type of reaction that takes place at each electrode in this simple cell.

• A

• B

• C

• D

What is the half equation and charge of the anode in a simple cell?

• Cu²⁺ + 2e^- → Cu

  The anode is the positive terminal.

• Cu²⁺ + 2e^- → Cu

  The anode is the negative terminal.

• Mg → Mg²⁺ + 2e^-

  The anode is the positive terminal.

• Mg → Mg²⁺ + 2e^-

  The anode is the negative terminal.

What is the half equation and charge of the cathode in a simple cell?

• Cu²⁺ + 2e^- → Cu

  The cathode is the positive terminal.

• Cu²⁺ + 2e^- → Cu

  The cathode is the negative terminal.

• Mg → Mg²⁺ + 2e^-

  The cathode is the positive terminal.

• Mg → Mg²⁺ + 2e^-

  The cathode is the negative terminal.

What happens when we change the cathode from magnesium to zinc?

• The voltage of the cell decreases.

• The voltage of the cell increases.

• The time taken for the copper sulfate to separate decreases.

• The time taken for the copper sulfate to separate increases.