Electrolysis

Question 1

What are electrolytes?

Answer 1

Ionic compounds that are:
* in the molten state
* dissolved in water

Question 2

What are ions able to do in the molten or dissolved state?

Answer 2

The ions are free to move within the liquid or solution

Question 3

What is the name of the negative charged electrode?

Answer 3

Cathode

Question 4

What is the name of the positive charged electrode?

Answer 4

Anode

Question 5

Where are the positive ions attracted to in electrolysis?

Answer 5

The negatively charged cathode

Question 6

Where are the negative ions attracted to in electrolysis?

Answer 6

The positively charged Anode

Question 7

At the cathode, What is produced if the metal is less reactive than hydrogen?

Answer 7

The metal

Question 8

At the cathode, What is produced if the metal is more reactive than hydrogen?

Answer 8

Hydrogen

Question 9

If a halide in the solution is not present during electrolysis what is produced at the anode?

Answer 9

Oxygen is produced

Question 10

If a halide in the solution is present during electrolysis what is produced at the anode?

Answer 10

The halide is produced

Question 11

What does a half equation at the cathode look like?

Answer 11

Na+ + e- —> Na

Question 12

What is the equation for the formation of oxygen at the Anode?

Answer 12

4OH- –> 2H20 + 02 + 4e-

Question 13

What is the equation for the formation of a halide at the anode?

Answer 13

2Cl- –> Cl2 + 2e-

Question 14

Where does reduction happen?

Answer 14

Cathode

Question 15

Where does oxidation happen?

Answer 15

Anode