4.3.4 Electrolysis Of Aqueous Solutions

Question 1

Aqueous solution

Answer 1

Substance dissolved in water

Question 2

H2O as an ion (2p)

Answer 2

OH-
H+

Question 3

Rule at cathode (2p)

Answer 3

• If the metal is more reactive than hydrogen, hydrogen is produced
• If the metal is less reactive than hydrogen, the metal will be produced

Question 4

Rule at the anode

Answer 4

• Oxygen will be produced unless there is a halogen

Question 5

Brine symbol

Answer 5

NaCl(aq)