Gibbs Free energy






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deniise_garciia
Posts: 30
Joined: Wed Nov 16, 2016 3:04 am

Gibbs Free energy

Postby deniise_garciia » Fri Feb 22, 2019 9:16 am

How do you know what temperature to use for delta G when it’s not given in the question?
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Cynthia Aragon 1B
Posts: 47
Joined: Mon Apr 09, 2018 1:38 pm

Re: Gibbs Free energy

Postby Cynthia Aragon 1B » Fri Feb 22, 2019 9:18 am

The standard temperature used is 298k.
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Desiree1G
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Re: Gibbs Free energy

Postby Desiree1G » Fri Feb 22, 2019 9:24 am

Standard temperature is 25 degrees celcius, however for Gibbs free energy we always use Kelvin so it is 273+25 which is 298 K
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Ethan Baurle 1A
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Joined: Fri Sep 28, 2018 12:19 am

Re: Gibbs Free energy

Postby Ethan Baurle 1A » Fri Feb 22, 2019 11:41 am

Sometimes, if given enough values, you may have the use the equation PV=nRT to solve for temperature.
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Henry Dudley 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:16 am

Re: Gibbs Free energy

Postby Henry Dudley 1G » Sat Feb 23, 2019 11:06 pm

If the temperature is not given try the ideal gas law, however, if that isn't possible, then use k=298.
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Danny Zhang 4L
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Joined: Fri Sep 28, 2018 12:26 am

Re: Gibbs Free energy

Postby Danny Zhang 4L » Sun Feb 24, 2019 1:27 am

When it's not given, it is usually suggested to be 298K.
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