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pKA values

Posted: Sat Dec 07, 2019 4:48 pm
by Celine 1F
what is pKA and why is it important

Re: pKA values

Posted: Sat Dec 07, 2019 5:55 pm
by Malia Shitabata 1F
pKa = -log[Ka] and it's the weak acid equilibrium constant. It's important to know so you can determine which acid is stronger/weaker when given its value. Ka and pKa have an inverse relationship. So a strong acid would have a high Ka value but a low pKa value. Conversely, a weak acid would have a low Ka value but a high pKa value.

Re: pKA values

Posted: Sat Dec 07, 2019 6:02 pm
by Ryan Juncker 3D
The biggest thing we need to know for chem 14A I believe is that a higher KA is a stronger acid, while a lower pKA is a stronger acid.

Re: pKA values

Posted: Sat Dec 07, 2019 8:41 pm
by AmyL_3L
pKa is the negative log of Ka, the acid dissociation constant. Lower the pKa, the stronger the acid, and vice versa.

Re: pKA values

Posted: Sat Dec 07, 2019 8:43 pm
by Brian J Cheng 1I
pKa is the negative log of the Ka value. Right now it's used in comparing acid strength as many have stated above.