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### Work and Battery system

Posted: Sun Feb 23, 2020 11:47 pm
I still don't understand how A battery system has to do with work? Why is the amount of energy that leaves the system -w? And When does energy leave a battery system?

### Re: Work and Battery system

Posted: Mon Feb 24, 2020 12:11 am
A battery will always do work because it's potential must be positive for it to provide energy to do work in the first place. Energy leaves a battery when it is being used.

### Re: Work and Battery system

Posted: Mon Feb 24, 2020 12:12 am
Is work and delta G related?

### Re: Work and Battery system

Posted: Mon Feb 24, 2020 10:36 am
Yes, work (max) equals delta G under constant temperature and pressure.

### Re: Work and Battery system

Posted: Tue Feb 25, 2020 11:09 pm
Ashley Fang 2G wrote:Yes, work (max) equals delta G under constant temperature and pressure.

What is the exact formula?

### Re: Work and Battery system

Posted: Wed Feb 26, 2020 11:25 am
Matt Sanruk 2H wrote:
Ashley Fang 2G wrote:Yes, work (max) equals delta G under constant temperature and pressure.

What is the exact formula?

He basically already wrote out the exact formula. At constant temperature and pressure, $w_{max} = \Delta G$. You can think of delta G as the amount of energy that is released that is free to do work. Therefore, the maximum amount of work that can be done would use up all of that released energy, meaning the two are equal.

### Re: Work and Battery system

Posted: Thu Feb 27, 2020 1:25 pm
Oh ok, so under these conditions they are basically equal to each other. Thanks!