A brass sample weighing 0.6592g is dissolved using concentrated nitric acid, buffered to a pH of 9.0, and then diluted to 500.0mL with deionizred water. Assume that the solution pH remains constant at pH 9.0. A 100,0mL aliquot is treated to complex all other cations except zinc, which is titrated to an Eriochrome T endpoint using 36.71mLs of 0.01525M EDTA solution.
A) Determine the % of zinc present in the brass.
B) Calculate the concentration of zinc ion at the equivalence point.