4.3.1 The process of electrolysis

• Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction
• Cations lose electrons at the anode
• In electrolysis, cations undergo reduction
• Cations undergo reduction
• Chlorine gas is formed at the anode during the electrolysis of NaCl.


  True
• Electrolysis uses an electric current to drive a non-spontaneous chemical reaction
• Cations move towards the cathode, where they undergo reduction
• Anions are attracted to the anode during electrolysis.

  True
• Which ions are attracted to the anode during electrolysis?

  More reactive anions
• The negative electrode in electrolysis is called the cathode
• During electrolysis, cations are attracted to the cathode
• What are positively charged ions called in electrolysis?

  Cations
• What is formed at the cathode during the electrolysis of molten sodium chloride?

  Sodium metal
• The anode is the negative electrode in electrolysis.

  False
• What is formed at the cathode during the electrolysis of NaCl?

  Sodium metal
• What is formed at the anode during the electrolysis of molten sodium chloride?

  Chlorine gas
• The products formed during electrolysis depend on the reactivity of the ions
• The positive electrode in electrolysis is called the anode.

  True
• Reduction occurs at the cathode during electrolysis.


  True
• Anions undergo oxidation at the anode during electrolysis.


  True
• Which component of electrolysis contains ions that carry charge?

  Electrolyte
• Cations undergo reduction at the cathode
• Order the steps to predict electrolysis products:

  1️⃣ Consider the oxidation and reduction reactions

  2️⃣ Identify more reactive anions

  3️⃣ Identify less reactive cations

  4️⃣ Predict neutral species formed