Solutions involve the dissolution of a solute in a solvent. In a saturated solution, the maximum concentration of a solute in a solvent is reached. No more solute is able to dissolve. We have been collecting data to determine the saturation of different in water at various temperatures. Using this data, we will construct solubility curves.
HW: Review the article entitled, "The Dissolution Process" - we will have a reading quiz. Complete the following problems on a separate sheet of paper (write question and answer).
1. Calculate the molarity (M) of a solution containing 30.0g of NaCl in 1500 mL of solution.
2. Calculate the mole fraction composition of a solution containing 500g C2H5OH and 500g of water.
3. How many grams of KBr could be obtained by evaporating 50 mL of a 0.50M solution of the KBr in water?
4. Calculate the molarity of a solution prepared by adding 500 mL of water to 100 mL of 0.60M solution.
5. To what volume must 100 mL of 6.0M HCl be diluted in order that the resulting solution be 1.0M?
Answers: 1. 0.34M NaCl; 2. C2H5OH = 0.28, H2O = 0.72; 3. 2.98g KBr; 4. 0.10M; 5. 600mL
