Page 1 of 1

electrolytic cell

Posted: Sun Mar 03, 2019 11:53 pm
by Jose Torres
In an electrolytic cell, the anode is labeled + (positive) and the anode is labeled - (negative) which is the opposite compared to the galvanic cell. Why is that so?

Re: electrolytic cell

Posted: Sun Mar 03, 2019 11:57 pm
by Chris Dis3L
In an electrolytic cell, electrons are forced via a voltage to be reduced at the cathode. In this case the the cathode is negative as a force is required to push the electrons.

Re: electrolytic cell

Posted: Mon Mar 04, 2019 5:11 pm
by Arianna Ko 2E
You will have a negative Ecell for an electrolytic cell because electrolysis is when you use an electric current in an electrolytic cell to drive a NON-spontaneous redox reaction.
-Ecell denotes a non-spontaneous reaction.

Re: electrolytic cell

Posted: Mon Mar 04, 2019 5:39 pm
by Douglas Nguyen 2J
In an eletrolytic cell, you're converting electrical energy into chemical energy, and in a galvanic cell, you're converting chemical energy into electrical energy!

Re: electrolytic cell

Posted: Mon Mar 04, 2019 6:49 pm
by Elisa Bass 4L
This notation is just a technicality because in an electrolytic cell, the electrons in the anode are being drawn towards the positive external charge of what is supplying energy to the chemical reaction. Meanwhile, electrons are being pushed towards the cathode on the other side, so they write it as negative to indicate this.