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pOH

Posted: Sun Jun 10, 2018 10:55 pm
by paulacamara1E
For the final, do we need to know how to calculate pOH, or just pH?

Re: pOH

Posted: Sun Jun 10, 2018 10:56 pm
by Mohamad Farhat 1L
I believe so we do.

Re: pOH

Posted: Mon Dec 03, 2018 4:09 pm
by Dina Geotas 4A
I think we need to know both because they go hand in hand! pOH = 14 - pH!

Re: pOH

Posted: Mon Dec 03, 2018 4:12 pm
by Adam Vuilleumier 2K
Just know that pOH is the -log[OH-] and a low pOH means that the solution is more basic. While we're on this topic, does anyone know why a low pKA means that it is a stronger acid?

Re: pOH

Posted: Mon Dec 03, 2018 4:20 pm
by Andrewwiner4D
We do need to be able to do both. In all the homework problems (or most) you had to find both. But they are pretty easy and depending on which compounds we are working with it is a useful skill.

Re: pOH

Posted: Mon Dec 03, 2018 5:44 pm
by Yukta Italia 3I
Adam Vuilleumier 4E wrote:Just know that pOH is the -log[OH-] and a low pOH means that the solution is more basic. While we're on this topic, does anyone know why a low pKA means that it is a stronger acid?

The higher the pKA value, the more tight the proton is held. Since one of the properties of a strong acid is its ability to lose a proton, the lower pKA value leads to stronger acidity. Also, a low pKA value means there is a high KA value, which also leads to stronger acidity.