Concentration Cells


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Ardo 2K
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

Concentration Cells

Postby Ardo 2K » Sun Feb 18, 2018 10:03 pm

What are the significance of concentration cells?

Nathan Tu 2C
Posts: 46
Joined: Fri Sep 29, 2017 7:07 am

Re: Concentration Cells

Postby Nathan Tu 2C » Sun Feb 18, 2018 10:08 pm

Concentration cells are special in that they create electricity because of only a difference in concentration. The difference in ion concentration drives electron flow because the system wants to reach equilibrium. There is only a difference in concentration because it is the same solution.

Emily Oren 3C
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Concentration Cells

Postby Emily Oren 3C » Sun Feb 18, 2018 10:09 pm

Concentration cells can be used to make a simple battery (using only a difference in concentration not substance) but not a very strong one

Masih Tazhibi 2I
Posts: 33
Joined: Fri Sep 29, 2017 7:06 am

Re: Concentration Cells

Postby Masih Tazhibi 2I » Sun Feb 18, 2018 10:46 pm

..Also, as the concentrations of the two half reactions change, the voltage also changes

Nora 1F
Posts: 46
Joined: Fri Sep 29, 2017 7:04 am

Re: Concentration Cells

Postby Nora 1F » Sun Feb 18, 2018 11:24 pm

It also might be helpful to keep in mind that with a concentration cell, the lower concentration should be the product concentration.

Ashley Garcia 2L
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

Re: Concentration Cells

Postby Ashley Garcia 2L » Mon Feb 19, 2018 2:48 pm

A concentration cell consists of two half-cells with the same electrodes but with different concentrations. This difference in ion concentration drives the flow of electrons from the more concentrated solution to the lower concentrated solution, which creates a voltage as the cell reaches equilibrium. The concentration gradient creates this voltage.


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

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