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Electrode Charges: Volatic + Electrolysis

Why is there a difference in the charge on each electrode depending on the process? Do the ions still go toward the same electrodes?

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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 Voltaic

CRAPOE - Cathode Reduction Anode Positive Oxidation Electrolytic

if 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 go

I've also suggested checking this guy out before to you: youtube.com/user/richthornley

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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 ! :)

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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.

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