Chapter 15 Part I Electrolysis of Molten Compounds Part II

Label the cathode and anode on the diagram

Why must there be constant heat supply during electrolysis?

In the electrolysis of molten sodium chloride, 46 g of sodium is formed at cathode. How many moles of chlorine gas are formed at the anode?

Which product is formed at the anode when molten lead(II) bromide is electrolysed?

• lead(II) ions

• lead atoms

• bromide ions

• bromine molecules

• bromine atoms

Aluminum is obtained by electrolysis of molten aluminum oxide. Which statement about this electrolysis is correct.

• Aluminum ions are oxidized to aluminum at the negative electrode.

• Aluminum ions are oxidized to aluminum at the positive electrode.

• Aluminum ions are reduced to aluminum at the negative electrode.

• Aluminum ions are reduced to aluminum at the positive electrode.

What happens when molten lead(II) chloride is electrolyzed?

• Chloride ions gain electron at the positive electrode.

• Chloride ions lose electrons at the negative electrode.

• lead(II) ions gain electrons at the negative electrode.

• lead(II) ions lose electrons at the positive electrode.