calculating work of a reversible reaction


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LeAirraBullingor2k
Posts: 77
Joined: Wed Mar 13, 2019 12:15 am

calculating work of a reversible reaction

Postby LeAirraBullingor2k » Mon Feb 10, 2020 8:49 pm

When will work be negative? Like how will we know whether to keep the negative number or not?

Michael Nguyen 1E
Posts: 120
Joined: Sat Aug 17, 2019 12:17 am

Re: calculating work of a reversible reaction

Postby Michael Nguyen 1E » Mon Feb 10, 2020 8:52 pm

Work will be negative when the system does work on the surroundings. This generally happens when the system expands in volume through work of expansion.

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

Re: calculating work of a reversible reaction

Postby Robert Tran 1B » Mon Feb 10, 2020 9:13 pm

Work will be negative if the volume is increasing. You should always keep the negative if you are calculating the work being done on the system.

Ashley Alvarado 2C
Posts: 45
Joined: Sat Aug 17, 2019 12:16 am

Re: calculating work of a reversible reaction

Postby Ashley Alvarado 2C » Mon Feb 10, 2020 10:36 pm

If a system is doing work on the surroundings in the instance of expansion, then work is being lost so work will be negative.

Joowon Seo 3A
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am
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Re: calculating work of a reversible reaction

Postby Joowon Seo 3A » Mon Feb 10, 2020 11:45 pm

work of a system will always be negative because we use the pressure external to calculate the work. The system will lose energy since it is doing work

Michelle Xie 2B
Posts: 99
Joined: Sat Aug 17, 2019 12:18 am

Re: calculating work of a reversible reaction

Postby Michelle Xie 2B » Tue Feb 11, 2020 2:58 pm

If the system is doing work, or expanding, work would be negative. If it had work being done on it, or being compressed, it would be positive.


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