work


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Vuong_2F
Posts: 90
Joined: Sat Sep 14, 2019 12:17 am

work

Postby Vuong_2F » Mon Mar 02, 2020 12:39 am

how is work related to free energy or cell potentials?

cassidysong 1K
Posts: 100
Joined: Fri Aug 30, 2019 12:15 am

Re: work

Postby cassidysong 1K » Mon Mar 02, 2020 12:54 am

Gibbs free energy is equal to the maximum non expansion work a reaction can do at constant pressure and temperature

Eugene Chung 3F
Posts: 142
Joined: Wed Nov 15, 2017 3:03 am

Re: work

Postby Eugene Chung 3F » Mon Mar 02, 2020 12:54 am

the deltaG for a cell is the amount of useful work obtainable from a system at constant T and P.

Vuong_2F
Posts: 90
Joined: Sat Sep 14, 2019 12:17 am

Re: work

Postby Vuong_2F » Mon Mar 02, 2020 1:31 am

Eugene Chung 3F wrote:the deltaG for a cell is the amount of useful work obtainable from a system at constant T and P.

thanks for your answer! how is work related to cell potential though?

605395381
Posts: 50
Joined: Mon Jun 17, 2019 7:24 am

Re: work

Postby 605395381 » Mon Mar 02, 2020 7:52 am

delta g is equal to the max non-expansion work (at constant p and t)

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: work

Postby Justin Quan 4I » Mon Mar 02, 2020 1:30 pm

To add on, the amount of work a system can do is determined by the total change in free energy. This relates to cell potential because in an electrochemical cell, the system converts chemical energy to electrical energy based on the system's cell potential. The about of work and free energy change depends on the cell potential and the number of electrons transferred.

Eugene Chung 3F
Posts: 142
Joined: Wed Nov 15, 2017 3:03 am

Re: work

Postby Eugene Chung 3F » Wed Mar 11, 2020 7:02 pm

The amount of work possible is dependent on the cell potential of the electrochemical cell

Jessa Maheras 4F
Posts: 121
Joined: Fri Aug 02, 2019 12:16 am

Re: work

Postby Jessa Maheras 4F » Wed Mar 11, 2020 7:18 pm

dG = max work possible ! This is because ideally, all energy released in the reaction would be used to do work. This is not realistic in nature however, because energy dissipates, etc.


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