Concentration cells


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Chew 2H
Posts: 34
Joined: Fri Sep 29, 2017 7:05 am

Concentration cells

Postby Chew 2H » Sat Mar 17, 2018 11:51 am

For concentration cells with different concentration, why does the product has to have lesser concentration than the reactant when we write the overall reactions?

GabrielGarciaDiscussion1i
Posts: 71
Joined: Fri Sep 29, 2017 7:04 am
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Re: Concentration cells

Postby GabrielGarciaDiscussion1i » Sat Mar 17, 2018 11:57 am

That is because the product will be gaining an increase in concentration as the reaction goes on because the anode will begin to consume the electrode and produce the Concentration ion while the cathode will be gaining mass to the electrode and consuming the Concentration ion. So in order for the reaction to proceed forward, the Concentration will go from high to low (reactants to products, it is favorable) and that must mean the Cathode, which consumes the Concentration ion, has the higher molarity.

melissa carey 1f
Posts: 53
Joined: Fri Sep 29, 2017 7:06 am

Re: Concentration cells

Postby melissa carey 1f » Sat Mar 17, 2018 11:58 am



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