Electrolysis and Preferential Discharge of Ions

What kind of Electrical Current does Electroysis require?

• Direct
• Indirect
• Anternative
• A alternating

Which statement correctly describes the 2 electrodes?

• The anode is negative and the cathode is positive
• The anode and cathode are both positive
• The anode is positive and the cathode is negative
• The anode and cathode are both negative.

What is the name given to the solution that is being electrolysed?

• Salt solution
• Electric solution
• Mineral solution
• Electrolyte

It is essetial that the electrolyte is a liquid so that...

• Charged ions can migrate towards the electrodes. 
• Charged ions can migrate towards the electrodes.
• The solution can move around.
• The current can flow through it.

What happens at the positive electrode?

• Positive non-metal ions are attracted
• Positive metal ions are attracted
• Negative non-metal ions are attracted
• Negative metal ions are attracted

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen
• Oxygen
• Chlorine
• Sodium

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^- 

What is an electrolytic cell? 

• a cell that converts chemical energy into electrical energy 
• a cell that converts electrical energy into electrical energy 
• a cell that converts electrical energy into chemical energy 
• A cell that converts kinetic energy into potential energy. 

What is the product formed at the anode during the electrolysis of concentrated copper(II) chloride?

• copper
• chlorine
• hydrogen
• oxygen

Which of the following is an electrolyte?

• sodium chloride
• sugar
• water