Ka and pKa

The Conjugate Seesaw

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Ryan Neis 2L
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

Ka and pKa

Postby Ryan Neis 2L » Sat Dec 09, 2017 2:05 am

What do the Ka and the pKa values tell us? Is there a conceptual difference or is it purely just mathematical differences?

Sophia Kim 1C
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 1 time

Re: Ka and pKa

Postby Sophia Kim 1C » Sat Dec 09, 2017 2:11 am

The difference between Ka and PKa is that Ka shows the proton donating strength of the acid and it is mathematically [H3O+][A-]/[HA] while Pka is the -log Ka. The smaller the value of Ka, the larger the value of pKa, the weaker the acid.

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