Electrolytic cells vs Galvanic Cells

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mendozayael_2H
Posts: 31
Joined: Fri Sep 29, 2017 7:06 am

Electrolytic cells vs Galvanic Cells

Postby mendozayael_2H » Sun Mar 18, 2018 5:33 am

What are the most important differences between an electrolytic cell and a galvanic cell (with regards to cell potential)?

Sara Varadharajulu
Posts: 60
Joined: Thu Jul 13, 2017 3:00 am
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Re: Electrolytic cells vs Galvanic Cells

Postby Sara Varadharajulu » Sun Mar 18, 2018 8:39 am

electrolytic cell converts electric energy into chemical energy (need external power source to drive current). a galvanic cell converts chemical energy into electrical energy.

Kevin Ru 1D
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Electrolytic cells vs Galvanic Cells

Postby Kevin Ru 1D » Sun Mar 18, 2018 2:37 pm

A galvanic cell (left) transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work. In an electrolytic cell (right), an external source of electrical energy is converted to chemical energy.

miznaakbar
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Re: Electrolytic cells vs Galvanic Cells

Postby miznaakbar » Sun Mar 18, 2018 3:04 pm

When given an electrolytic cell, make sure to set up your redox reactions so that you get a negative overall standard reduction potential. But when given an galvanic cell, make sure to get a positive overall standard reduction potential. The reason galvanic cells, which have spontaneous redox reactions, have a positive E standard is so that Delta G will be negative (delta G= - nFE)


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