Changes at the electrodes

Question 1

when ions reach the electrode they do what

Answer 1

either gain or loose electrons depending on their charge

Question 2

on half equations, if it is reduction the the adding the electrons has to be on the

Answer 2

left

Question 3

on half equations, if it is oxidisation the the adding the electrons has to be on the

Answer 3

right

Question 4

what’s the half equation for hydroxide

Answer 4

4OH- → 2H20 + O2 + 4e-

Question 5

half equation for hydrogen

Answer 5

H2 + 2e- → H2

Question 6

which is the order for displacing

Answer 6

halide > hydroxide > all other negatively charged ions