Does pKa mean -log(Ka) or log(Ka)?

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JameB

What does "pKa" mean?

Just need to double check, pK_a means -log(K_a) right? Or does it mean log(K_a)?

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Borek

Mentor

Yes, -log. Just like in pH, pOH. Also often pK_sp (solubility product).

JameB

Borek said:

Yes, -log. Just like in pH, pOH. Also often pK_sp (solubility product).

Thanks!