pH and pKA for acids

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SajaZidan_1K
Posts: 56
Joined: Wed Sep 18, 2019 12:15 am

pH and pKA for acids

Postby SajaZidan_1K » Sat Dec 07, 2019 1:16 pm

I am rereading the notes from week 10, lecture 1 and I see if the pH<pKA then the solution is acidic. Is this true all the time because in the example for HA from lecture, the pH is more than pKA since the pH is 6 and the pKA is 4.22, the solution is still labeled as acidic? How is this true?

Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

Re: pH and pKA for acids

Postby Sahil Jog 1F » Sat Dec 07, 2019 2:47 pm

If pH<PKa, then the solution will be more acidic. This is due to the shift in chemical equilibrium, as the weak acid will deprotonate in order to shift the solution's acidity so that pH=PKa.


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