DropBoite Posted April 30, 2014 Report Share Posted April 30, 2014 Why is there a difference in the charge on each electrode depending on the process? Do the ions still go toward the same electrodes? Reply Link to post Share on other sites More sharing options...
Bude Posted April 30, 2014 Report Share Posted April 30, 2014 Why is there a difference in the charge on each electrode depending on the process? Do the ions still go toward the same electrodes?Use this mnemonic to help you:CRANOV - Cathode Reduction Anode Negative Oxidation VoltaicCRAPOE - Cathode Reduction Anode Positive Oxidation Electrolyticif I performed electrolysis on NaCl, the Cl- would go to the positive electrode, which is the anode, as the electron is attracted to the positive charge of the anode. The Na+ would go to the negative electrode, which is the cathode. At the cathode, reduction occurs, which is gain of electrons. Na+ gains electrons that came from the Cl-.The power source is needed as it sends electrons where they don't want to goI've also suggested checking this guy out before to you: youtube.com/user/richthornley 1 Reply Link to post Share on other sites More sharing options...
DropBoite Posted April 30, 2014 Author Report Share Posted April 30, 2014 Thanks! Sorry If I've forgotten! It's really no easy task re-doing two sciences after a gap + 1 year humanities. Videos take too long so most often I leave those as a last resort. Thanks anyway ! Reply Link to post Share on other sites More sharing options...
Bude Posted May 1, 2014 Report Share Posted May 1, 2014 (edited) Thanks! Sorry If I've forgotten! It's really no easy task re-doing two sciences after a gap + 1 year humanities. Videos take too long so most often I leave those as a last resort. Thanks anyway ! You can't say that before you've even seen this guy's videos lol If the IB allocates 3 teaching hours to it, he can do it in about 8 minutes. It's really really efficient. Edited May 1, 2014 by Bude Reply Link to post Share on other sites More sharing options...
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