Electrolysis

Question 1

why must the power supply in electrolysis be D.C?

Answer 1

so the current flows one way

Question 2

What is the Cathode?

Answer 2

the negative electrode

Question 3

What is the Anode?

Answer 3

the positive electrode

Question 4

what are the electrodes?

Answer 4

inert conductors made of graphite

Question 5

what is the electrolyte?

Answer 5

solution containing ions

Question 6

What occurs during electrolysis?

Answer 6

the cations(positive ions) are attracted towards the cathode where they gain e- and are reduced to form neutral atoms.

the anions are attracted towards the anode where they lose e- and are oxidised to neutral atoms

electrons flow from negative to positive electrode

Question 7

what is electroplating?

Answer 7

uses electrolysis to coat a cheap metal with a more expensive one or for protection