different types of cells


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Emily Tam 1k
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Joined: Fri Sep 28, 2018 12:22 am

different types of cells

Postby Emily Tam 1k » Sat Mar 16, 2019 10:41 pm

what is the difference between a concentration cell, a galvanic cell, a voltaic cell, and an electrolytic cell?

904936893
Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

Re: different types of cells

Postby 904936893 » Sat Mar 16, 2019 10:46 pm

I'm pretty sure voltaic and galvanic cell are the same (convert chemical energy to electrical energy, standard cell potential is always positive). Electrolytic cells convert electrical energy to chemical energy, and use spontaneous reactions to drive nonspontaneous reactions, the standard cell potential will be negative, since it is nonspontaneous. Concentration cells have a standard cell potential of O, and are driven by differing concentrations of the same compound on each side (cathode and anode) of the cell. Concentration cells also convert chemical energy in electrical energy, and once they reach equilibrium, the reaction stops (because there is no longer a concentration difference).


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