Saturday, 23 April 2016

5.3 write ionic half-equations for the reactions at the electrodes in aluminium extraction.

If you are looking at this post I assume you know what the electrolysis of aluminium oxide is and the implications, if you do not know, this may help... 5.2

The equations are as follows...

At the anode (positive electrode): 2O2 ---> O+ 4e− 

At the cathode (negative electrode): Al3+ + 3e− ---> Al

2 comments:

  1. The right equation for cathode (negative electrode) is : Al3+ + 3e- → Al

    ReplyDelete
    Replies
    1. Good spot thank you!! mustve just been a typo hahaha, will change it now:)

      Delete