Electrolysis

Question 1

What does the cathode attract?

Answer 1

The cathode attracts positive ions that are more reactive than hydrogen

K Na Ca Mg Zn Fe Then, hydrogen is produced

If positive ions are less reactive than hydrogen

Cu Ag Au. Then metal is produced.

Question 2

What does the anode attract?

Answer 2

If ions are halogens

Cl Br I Then the halogen is produced (Cl2)

If the ions are not halogens,

SO4 NO3 CO3 Then oxygen is produced.

Question 3

What charge is the cathode?

Answer 3

Negatively charged

Question 4

What charge is the anode?

Answer 4

Positively charged

Question 5

What happens if carbon or graphite electrodes are used

Answer 5

Carbon dioxide will form because O2+C turns to CO2

Question 6

Why would we use a carbon electrode

Answer 6

There are many free electrons, a high melting point, and is very durable