Electrolysis: แบบฝึกหัด

• 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.

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