The Half-Equations - Make Sure the Electrons Balance

Question 1

What can you write out half-equations for?

Answer 1

The reactions that take place at the anode and the cathode

Question 2

What is the main thing to make sure?

Answer 2

The number of electrons is the same for both half-equations

Question 3

Electrolysis of sodium chloride half equations:

Answer 3

Cathode: 2H+ + 2e- —> H2
Anode: 2Cl- —> Cl2 + 2e-