" A Aqueous solution of K3PO4 5% in Mass has a density of 1,043g/ml.
a) What is the Molar Concentration, Mole Fraction and Molal Concentration of the solution?
b) When 80ml of this solution are mixed with 70ml of a solution of K2SO4 0,750mole/L, what is the final Molar concentration of the Ions?
c) What is the Volume needed of a Solution of CaCl2 0,900mole/L to completely precipitate Ca3(PO4)2 with 150ml of this K3PO4 Solution?"
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