Positive Voltage - CHEMISTRY COMMUNITY (2024)

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Positive Voltage

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Kayla Maldonado 1C
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Positive Voltage

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Postby Kayla Maldonado 1C » Sun Feb 23, 2020 2:01 am

In this course should we always assume a more positive standard reduction meaning the reaction is more likely to undergo reduction and be on the cathode side (will lead to a positive voltage) ? If not how can we find out if the reaction will be on the anode side vs the cathode side?

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Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

Re: Positive Voltage

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Postby Sahil Jog 1F » Sun Feb 23, 2020 10:06 am

For the most part, yes. Since most of the problems require you to either find the concentration of reactants, products, the voltage of the cell, etc. , you should assume that there will be a positive voltage unless specified.

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Daria Azizad 1K
Posts: 116
Joined: Thu Jul 25, 2019 12:15 am

Re: Positive Voltage

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Postby Daria Azizad 1K » Sun Feb 23, 2020 10:06 am

Yes, because its positive value means that delta G will be negative, therefore the rxn is spontaneous. If the standard potential is negative, that means the reverse rxn is spontaneous.

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