(15 pts.) A chemist dissolved 86.441 grams of CuBr2 * 2H2O into enough water to make 125.0 mL of aqueous CuBr2 solution

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(15 pts.) A chemist dissolved 86.441 grams of
CuBr2 * 2H2O into enough water to make 125.0
mL of aqueous CuBr2 solution.
(a) Calculate the
nominal concentration of this solution, in
molarity.
(b) He then titrated the
above solution with some 0.684 M KI solution. The reaction
occurs as
follows:
2 CuBr2 (aq) + 4 KI (aq) à 2 CuI (s) + I2
(aq) + 4 KBr (aq)
How many mL of the KI solution will be needed
to completely precipitate out all the copper ions of a 25.00 mL of
the above CuBr2 solution?
(c) How many
grams of CuI should he obtain from the above
titration?