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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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nyerramilli nyerramilli
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11 years ago
The only information that I'm given is the molar concentration   (in g/mol) of the acetic acid and the acetate
They are both 0.1g/mol

HELP!!!!
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wrote...
#1
11 years ago
if they are in equal concentration the pH should equal the pKa which I'm pretty sure is 4.76.  the equation i used is pH=pKa+log(A-/HA)
wrote...
#2
11 years ago
pH=pKa + log ([H+]/[HA])

In your case, [H+] = [HA] therefore ([H+]/[HA]) = 1.

Since log 1 = 0, then pH is equal to the pKa of the conjugate acid.
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