electrolysis

What would be the product at the negative electrode in the electrolysis of molten Sodium Chloride

• Sodium

• Chlorine

• Hydrogen

• Oxygen

What is the name of the positive electrode?

• cathode
• anode

What is the name of the negative electrode?

• cathode
• anode

The negatively charged ions migrate toward the ________.

• anode
• cathode

What is the equation to show what happens to Cl ions at the anode.

• Cl^- --> Cl + e-   
• 2Cl^- --> Cl₂ + 2e-   
• Cl₂ + 2e-   2Cl^- 
• Cl₂ + 2e-  _-->  2Cl^- 

The diagram shows the electrolysis of lead(II) bromide using inert electrodes. Why does the bulb only light up when the lead(II) bromide is melted?

• Bromine atoms in lead(II) bromide are converted to ions when it is melted

• Electrons flow through the lead(II) bromide when it is melted

• The ions in lead(II) bromide are mobile charge carriers in the molten state.

• There are no ions in solid lead(II) bromide

Choose the half-equation that shows the discharge of aluminium ion.

• Al³⁺ - 3e^- --> Al

• Al²⁺ + 3e^- --> Al

• Al³⁺ + 3e^- --> Al

• Al³⁺ --> Al + 3e^-

What state must the ionic compound be in to be electrolysed?

• aqueous only

• solid only

• solid or aqueous only

• molten or aqueous only

What particle carries the charge in the wire?

• electron

• proton

• ion

• atom

What particle carries the charge in the electrolyte?

• electron

• proton

• ion

• atom