units

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004253593
Posts: 218
Joined: Fri Sep 20, 2013 3:00 am

units

Postby 004253593 » Thu Jan 23, 2014 12:13 pm

Is entropy in J while enthalpy is in kJ?
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Robert
Posts: 144
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Re: units

Postby Robert » Thu Jan 23, 2014 12:30 pm

The entropy values are given in Joules in the appendix, so remember to divide entropy by 1000 to keep everything in kJ. Also for the sake of simplicity when using the equations such as delta G= delta H - TdeltaS
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Chem_Mod
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Re: units

Postby Chem_Mod » Wed Feb 05, 2014 7:40 am

J and kJ are both measurements of energy. The only difference between the two is magnitude. Given how values of enthalpy are often much larger than values of entropy, it's usually easier to write enthalpy in kJ instead of numberx103 J.
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