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Science-Related Homework Help Chemistry Topic started by: fistpumporgy on Sep 4, 2012



Title: How do you find the pKa of an acid, when the pH and concentration are given.?
Post by: fistpumporgy on Sep 4, 2012
Calculate the pKa of the weak acid whose solution has a pH of 2.11 at a concentration of 0.450 M.


Title: Re: How do you find the pKa of an acid, when the pH and concentration are given.?
Post by: oogunsol on Sep 5, 2012
pKa=pH-log([A-]/[HA]) thus we have 2.11-log([A-]/[HA]) but since we do not have the concentration of strong base used in dilution, this question is incomplete.(Note: log is in base 10)