Electrolysis: Practice Questions

• a.All ions move toward the cathode regardless of their charge.
• b.Ions remain stationary while electrons carry the current through the solution.
• c.Positively charged ions move to the positive electrode and negatively charged ions move to the negative electrode.
• d.Positively charged ions move to the negative electrode and negatively charged ions move to the positive electrode.

• a.

  Anode: Oxygen gas; Cathode: Hydrogen gas

• b.

  Anode: Oxygen gas; Cathode: Sodium metal

• c.

  Anode: Chlorine gas; Cathode: Hydrogen gas

• d.

  Anode: Chlorine gas; Cathode: Sodium metal

• a.\(2H^{+}(aq) + 2e^{-} \rightarrow H_{2}(g)\)
• b.\(Na^{+}(aq) + e^{-} \rightarrow Na(s)\)
• c.\(4OH^{-}(aq) - 4e^{-} \rightarrow O_{2}(g) + 2H_{2}O(l)\)
• d.\(2Cl^{-}(aq) \rightarrow Cl_{2}(g) + 2e^{-}\)

• a.Electrode
• b.Element
• c.Electrolyte
• d.Electron

• a.

  Hydrogen gas is produced at the cathode and oxygen gas is produced at the anode.

• b.

  Hydrogen gas is produced at the cathode and sulfate ions are produced at the anode.

• c.

  Sodium metal is produced at the cathode and sulfur dioxide is produced at the anode.

• d.

  Sodium metal is produced at the cathode and oxygen gas is produced at the anode.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.