the number of grams of CuSO4, 5H2O that will dissolve in 100g of H2O at 100 Celcius.
Posted: Wed Jun 08, 2022 8:31 pm
the number of grams of CuSO4, 5H2O that will dissolve in 100g of H2O at 100 Celcius.
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 CuSO4.5H₂O that will dissolve in 100 g of H₂0 at 100°C. g CuSO4.5 H₂O b. the number of grams of water required to dissolve 3.9 g of CuSO4.5 H₂O at 100°C. [Hint: Your answer to Problem 1(a) gives you the needed conversion factor for (g CuSO4.5H₂O) to (g H₂O).] g H₂O C. the number of grams of water required to dissolve 37 g KNO3 at 100°C. g H₂0 d. the number of grams of water required to completely dissolve a mixture containing 37 g of KNO, and 3.9 g of CuSO4.5H₂O, assuming that the solubility of one substance is not affected by the pres- ence of another. (This is generally a surprisingly good assumption when the substances have no ions in common!) g H₂O (continued on following page)
22 22 Experiment 3 Resolution of Matter into Pure Substances, II. Fractional Crystallization 2. To the solution in Problem 1(d) at 100°C, an additional 12.0 g of water are added, and the solution is cooled to 0°C. a. How much KNO, remains in solution? g KNO, b. How much KNO, crystallizes out? c. How much CuSO4.5H₂O crystallizes out? d. What percent of the KNO, in the sample is recovered? g KNO, g CuSO4.5H₂O % .
240 200 160 KNO3 120 CuSO4 H₂O 80 40 10 20 30 40 50 60 70 80 90 100 Temperature in °C 3.1 The solubility of potassium nitrate (KNO,) and copper(II) sulfate pentahydrate (CuSO, 5H r both vary appreciably with temperature. While both solubilities increase with increasing temperat Solubility in g solute/100 g H₂O
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22 22 Experiment 3 Resolution of Matter into Pure Substances, II. Fractional Crystallization 2. To the solution in Problem 1(d) at 100°C, an additional 12.0 g of water are added, and the solution is cooled to 0°C. a. How much KNO, remains in solution? g KNO, b. How much KNO, crystallizes out? c. How much CuSO4.5H₂O crystallizes out? d. What percent of the KNO, in the sample is recovered? g KNO, g CuSO4.5H₂O % .
240 200 160 KNO3 120 CuSO4 H₂O 80 40 10 20 30 40 50 60 70 80 90 100 Temperature in °C 3.1 The solubility of potassium nitrate (KNO,) and copper(II) sulfate pentahydrate (CuSO, 5H r both vary appreciably with temperature. While both solubilities increase with increasing temperat Solubility in g solute/100 g H₂O