Experiment 3 Advance Study Assignment: Resolution of Matter into Pure Substances, II. Fractional Crystallization 1. Using Figure 3.1, determine a. the number of grams of KNO, that will dissolve in 100 g of H₂O at 100°C. 240 g KNO₁ b. the number of grams of water required to dissolve 25 g of KNO, at 100°C. (Hint: your answer to Part a gives you the needed conversion factor for g KNO, to g H₂O.) 10.41 g H₂O C. the number of grams of water required to dissolve 2.0 g CuSO4 5 H₂O at 100°C. 1. 11 g H₂O d. the number of grams of water required to dissolve a mixture containing 25 g KNO, and 2.0 g CuSO 5 H₂O, assuming that the solubility of one substance is not affected by the presence of another. 11.52 g H₂O 2. To the solution in Problem 1d at 100°C, 10 g of water are added, and the solution is cooled to 0°C. a. How much KNO, remains in solution? b. How much KNO, crystallizes out? C. How much CuSO4 5 H₂O crystallizes out? d. What per cent of the KNO, in the sample is recovered? g KNO g KNO, g CuSO4 5 H₂O %