The B4O5(OH)4^2- ion present in 5 ml of a saturated Na2B4O5(OH)4 solution at a measured temperature is titrated to the bromocresol endpoint with 3.25 ml of .291 M HCl.
A) How many moles of B4O5(OH)4^2- are present in the sample?
B) What is the molar concentration of B4O5(OH)4^2- in the sample?
C) Calculate the Ksp for Na2B4O5(OH)4^2- from this data.
D) What is the free energy for the dissolution of Na2B4O5(OH)4^2- at this temperature?