Question

Acetic acid is a weak acid with a pKa of 4.75. Set up a titration using 20.00 mL of acetic acid solution to 20mL strong base NaOH.

Concentration of NaOH soln: 9.878x10^-2 mol/L

Initial buret reading (mL): 0.00

Buret reading at equivalence pt (mL): 21.51

Calculate the following:

a.) Moles of NaOH added at equivalence pt

b.) Moles of acetic acid in sample

c.) Acetic acid concentration (mol/L)

d.) pH at equivalence point

e.) pH at half the volume required to reach equivalnce

f.) pKa of acetic acid

Thank you!