Conc. Cells

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Miranda 1J
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am

Conc. Cells

Postby Miranda 1J » Sun Feb 18, 2018 5:27 pm

In a concentration cell, why does the product concentration need to be lower than the reactants?

Chris Pleman 3E
Posts: 51
Joined: Thu Jul 27, 2017 3:01 am
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Re: Conc. Cells

Postby Chris Pleman 3E » Sun Feb 18, 2018 5:41 pm

Because the addition of the electron into the products cause the ions to aggregate into solids, which will accumulate on the electrode that's in the solution- so you're making more of the inert substance.

Michelle Nguyen 2L
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

Re: Conc. Cells

Postby Michelle Nguyen 2L » Sun Feb 18, 2018 10:34 pm

Ions will form at the electrode where the ion concentration is lower in order to reach equilibrium. In a concentration cell, the reactants and products are the same ions except their concentrations; hence, the product ions form at the side with the lower ion concentration.

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

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