1.54 Describe experiments to investigate electrolysis, using inert electrodes, of aqueous solutions such as sodium chloride, copper(II) sulfate and dilute sulfuric acid and predict the products

• Place inert electrodes in aqueous ionic solution
• At positive electrode (anode), - ion will form an atom (non metal) 
• At negative electrode (cathode), + ion will form an atom (metal)

eg

• Sodium chloride: sodium at cathode, chlorine at anode
• Copper(II) sulphate: copper at cathode, oxygen at anode, sulphur stays in solution
• Sulphuric acid: hydrogen at cathode, oxygen at anode, sulphur stays in solution

To help remember:

CINDY IS NOT AN INDECENT POTATO:

Cathode

Is

Negative

Anode

Is

Positive

NAP MAN:

Non-metal

At

Positive

Metal

At

Negative

CCOASS (for copper(II) sulphate)

(Cathy Chopped Apples And Stabbed Sue)

Copper

Cathode

Oxygen

Anode

Sulphur

Solution

HCOASS (for dilute sulphuric acid)

(Henry Cut Onions And Started Sulking)

Hydrogen

Cathode

Oxygen

Anode

Sulphur

Solution