Electrolysis RP (P1)

Question 1

Electrolysis of copper sulfate method

Answer 1

Add approximately 40ml copper sulfate to the beaker
Place the lid on the beaker and insert the electrodeswitgiut them touching
Attach crocodile leads and attach to the power pack
Set the power supply to 4V and turn on
Hold a piece of blue litmus next to the anode using tweezers
Turn off after 4 minutes

Question 2

Blue litmus results

Answer 2

Red, then white= chlorine

Red= oxygen

Question 3

Copper sulfate

Copper chloride

Answer 3

Anode
Sulfate:red litmus, bubbles- oxygen
Chloride:bubbles, litmus red then white- chlorine
Cathode:
Sulfate+ chloride: copper coating- copper

Question 4

Sodium sulfate

Sodium chloride

Answer 4

Anode:
Sulfate: bubbles, red litmus- oxygen
Chloride: bubbles, litmus red then white- chlorine
Cathode:
Both: bubbles-hydrogen