Relationship between pKa, pKb, and pH

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makenzie2K
Posts: 31
Joined: Fri Sep 28, 2018 12:20 am

Relationship between pKa, pKb, and pH

Postby makenzie2K » Tue Jan 15, 2019 8:31 pm

Given a pK value how do we calculate pH? The relationship is a little difficult to interpret from the text.

Gary Qiao 1D
Posts: 66
Joined: Fri Sep 28, 2018 12:26 am

Re: Relationship between pKa, pKb, and pH

Postby Gary Qiao 1D » Tue Jan 15, 2019 9:57 pm

Given a pKa value, you can convert the pKa to Ka using pKa = -logKa. Because Ka = [H+][A-]/[HA], you could find [H+] .
-log[H+] would give the pH.


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