C3-7 Aqueous electrolysis

In the electrolysis of aqueous sodium chloride which ions will be present in the solution?

• Na+, H+, Cl-, OH-

• Na+, OH+, Cl-, H-

• Na-, H-, Cl+, OH+

• Na+, Cl+, H-, OH-

In the aqueous electrolysis of sodium chloride which products will be produced at the anode and the cathode?

• Anode: Hydrogen

  Cathode: Chlorine

• Anode: Hydrogen

  Cathode: Sodium

• Anode: Sodium

  Cathode: Chlorine

• Anode: Chlorine

  Cathode: Hydrogen

In the aqueous electrolysis of copper chloride which products will be produced at the anode and the cathode?

• Anode: Hydrogen

  Cathode: Chlorine

• Anode: Hydrogen

  Cathode: Copper

• Anode: Chlorine

  Cathode: Copper

• Anode: Chlorine

  Cathode: Hydrogen

In aqueous electrolysis what happens at the cathode to metals above hydrogen?

• They are displaced by hydrogen.

• They are reduced at the cathode.

• Hydrogen is produced at the anode as it is less reactive.

• Thye remain in solution and hydrogen is produced at the cathode.

In the aqueous electrolysis of copper bromide, which statement is correct?

• Copper is produced at the anode and hydrogen at the cathode

• Hydrogen is produced at the anode and chlorine at the cathode

• Copper is produced at the cathode and hydrogen at the anode

• Copper is produced at the cathode and chlorine at the anode

A solution of sodium chloride contains four different ions. Which statement shows the correct four ions?

• Na+, H+, CL-, OH-

• Na+, H+, Cl-, OH-

• Na+, H-, Cl-, OH+

• Na2+, H+, Cl-, OH-

An aqueous solution of sodium chloride contains four different ions. Chlorine gas is produced at the anode. What is the test for this gas?

• Squeaky pop test

• Relights a glowing splint

• It turns blue litmus red then white.

• Turns lime water milky

An aqueous solution of sodium chloride contains four different ions. Hydrogen gas is produced at the cathode. What is the test for this gas?

• Squeaky pop test

• Relights a glowing splint

• It turns blue litmus red then white.

• Turns lime water milky

In the electrolysis of water oxygen is produced at the anode. What is the test for this gas?

• Squeaky pop test

• Relights a glowing splint

• It turns blue litmus red then white.

• Turns lime water milky

In the electrolysis of water hydrogen is produced at the cathode. What is the test for this gas?

• Squeaky pop test

• Relights a glowing splint

• It turns blue litmus red then white.

• Turns lime water milky