How to calculate K  [ENDORSED]


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Ashley Garcia 2L
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

How to calculate K

Postby Ashley Garcia 2L » Sat Feb 03, 2018 3:32 pm

How would you calculate K if you are given ΔG°? I used the equation ΔG°=-RTlnK and isolated lnK so that lnK=ΔG°/-RT. How do you isolate the K term from lnK?

vicenteruelos3
Posts: 42
Joined: Fri Sep 29, 2017 7:07 am

Re: How to calculate K

Postby vicenteruelos3 » Sat Feb 03, 2018 3:39 pm

to isolate k you would do e^lnk

and for the other side of the equation e^....

Sophie 1I
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Re: How to calculate K

Postby Sophie 1I » Sat Feb 10, 2018 3:36 pm

From lnK=ΔG°/-RT you take e^x of both sides so the ln will cancel and you will have e^whatever ΔG°/-RT is

Sandhya Rajkumar 1C
Posts: 50
Joined: Fri Jun 23, 2017 11:40 am

Re: How to calculate K  [ENDORSED]

Postby Sandhya Rajkumar 1C » Sat Feb 10, 2018 6:54 pm

If you are given ΔG°, you can calculate K by first isolating it. Once you have lnK = ΔG°/-RT you then get rid of the natural log in front of the K by using e. You end up with e^(lnK) = e^(ΔG°/-RT) and the e^ln cancels out, so K = e^(ΔG°/-RT).


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