5.4.3.3 using electrolysis to extract metals

Question 1

Can metals be extracted from molten compound by using electrolysis?

Answer 1

Yes

Question 2

When is electrolysis used (due to the metal)

Answer 2

If the metal is too reactive to be extracted via reduction with carbon or if the metal reacts with carbon

Question 3

What are the amounts of energy used in the extraction process to melt the compounds and to produce the electrical current

Answer 3

Large amounts of energy

Question 4

What is manufactured by the electrolysis of a molten mixture of aluminium oxide and cryolite using carbon as the positive electrode (anode)

Answer 4

Aluminium