Posted by Hannah on Wednesday, April 25, 2012 at 6:47pm.
If your answer is in J then multiply -431.16 by thousand and you delta S .12529. Make sure all your unit are in J/mol K and Temperature in K.
-468496.42 J
delta H is usually listed in kJ/mol and S in units of J/mol. Most of the time I want to use dG I must convert it to J so I usually convert delta H to J (1000 x delta H in kJ/mol = delta H in J/mol) and that will match S in J/mol. That will give you dG in J/mol.
I did
-431.16kJ/mol X 1000 = -431160
Then -431160 - (298 X 0.12529 kJ/K*mol) = -431197.33 for delta G but this answer was said to be incorrect, I do not know why??
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