Reactants As Electrodes

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Ray Guo 4C
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Joined: Fri Sep 28, 2018 12:15 am

Reactants As Electrodes

Postby Ray Guo 4C » Fri Feb 22, 2019 11:31 pm

In some half-cells the solid reactant can be used as the electrode, such as zinc in Zn/. How do I know which solid reactants can be used as electrodes and which ones cannot?

Matthew Mar 1J
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Joined: Fri Sep 28, 2018 12:15 am
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Re: Reactants As Electrodes

Postby Matthew Mar 1J » Sat Feb 23, 2019 3:34 pm

Generally the reactants that can be used as electrodes will be metals in their solid form because they are conductive and can be involved in the reaction without being dissolved into the solution (there are exceptions like mercury which is a liquid metal and graphite which is made of carbon).

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