Concentration Cells


Moderators: Chem_Mod, Chem_Admin

eduardomorales5
Posts: 77
Joined: Fri Aug 30, 2019 12:15 am

Concentration Cells

Postby eduardomorales5 » Thu Feb 27, 2020 7:20 pm

Whats the difference between a concentration cell and a galvanic cell? Does one of them do more work than the other cell?

Luc Zelissen 1K
Posts: 57
Joined: Mon Jun 17, 2019 7:23 am

Re: Concentration Cells

Postby Luc Zelissen 1K » Thu Feb 27, 2020 7:49 pm

A concentration cell is an electrolytic cell that is comprised of two half-cells with the same electrodes, but differing in concentrations. The only work done from a concentration cell occurs from a difference in concentration

Zaynab Hashm 2I
Posts: 110
Joined: Wed Sep 11, 2019 12:15 am
Been upvoted: 1 time

Re: Concentration Cells

Postby Zaynab Hashm 2I » Thu Feb 27, 2020 8:21 pm

both concentration and galvanic cells are batteries in which the redox reaction has a positive voltage, however;

concentration cells have the same chemical species (with different concentrations) while galvanic cells have different chemical species

Matt F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Concentration Cells

Postby Matt F » Fri Feb 28, 2020 10:08 am

Galvanic and Voltaic cells are both sensitive to changes in [R] and [P], so they can be made with the same components at different concentrations. Concentration cells consist of the same species on both sides but differ in concentrations, like the example from lecture with Ag at 1M and 0.1M

504939134
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: Concentration Cells

Postby 504939134 » Fri Feb 28, 2020 1:40 pm

Both galvanic and concentration cells have a positive voltage, but the difference between both is that in concentration cells contain the same chemical species but in different concentrations, the difference in concentration drives movement of electrons, and the voltage tends to be very low. In galvanic cells the chemical species are different.

Leslie Almaraz 4G
Posts: 99
Joined: Fri Aug 02, 2019 12:16 am

Re: Concentration Cells

Postby Leslie Almaraz 4G » Fri Feb 28, 2020 3:26 pm

Is there different equations to use?

Michelle Xie 2B
Posts: 99
Joined: Sat Aug 17, 2019 12:18 am

Re: Concentration Cells

Postby Michelle Xie 2B » Sat Feb 29, 2020 5:05 pm

A concentration cell has different concentrations.


Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

Who is online

Users browsing this forum: No registered users and 2 guests