posted by tierra .
knowing that one mole of KHP, C8H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralized 30.0mL of the 0.10 M NaOH solution?
30mL of .1M NaOH has .03*.1 = .003 moles NaOH.
so, it will take .003 moles of KHP to react with it. Convert moles to grams to get the mass.