A 028 mol sample of a weak acid with an unknown pKa was comb

A 0.28 mol sample of a weak acid with an unknown pKa was combined with 12.0 mL of 3.10M KOH and the resulting solution was diluted to 1.500 L. The measured pH of the solution was 3.95.

moles of KOH=3.1*0.012

=0.0372

so,

pH=pKa+log(salt/acid)

or 3.95=x+log(0.0372/(0.28-0.0372))

or x=4.76471

A 0.28 mol sample of a weak acid with an unknown pKa was combined with 12.0 mL of 3.10M KOH and the resulting solution was diluted to 1.500 L. The measured pH o

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