A 5.079 g sample of a solid, weak, monoprotic acid is used tomake a 100.0 mL solution. 26.00 mL of the resulting acid solutionis then titrated with 0.09454 M NaOH. The pH after the addition of18.00 mL of the base is 5.54, and the endpoint is reached after theaddition of 47.60 mL of the base. Please see Titration to DetermineMolecular Weight for assistance.
(a) How many moles of acid were present in the 26.00 mL sample?mol
(b) What is the molar mass of the acid? g/mol
(c) What is the pKa of the acid?
