1. Solutions Review Problems have solutions, solutions have problems.

2. Molarity What volume of a.150 M NaCl solution contains.50 moles of NaCl? What is the molarity of a solution where.80 moles of sucrose is dissolved in.45 L of solution? How much KBr is contained in.250 L of a 1.7 M KBr solution?

3. Molality What mass of a.150 m NaCl solution contains.50 moles of NaCl? What is the molality of a solution where.80 moles of sucrose is dissolved in.45 kg of solution? How much KBr is contained in.250 kg of a 1.7 m KBr solution?

4. % composition What mass of a 15% NaCl solution contains.50g of NaCl? What is the % composition of a solution where 80 g of sucrose is dissolved in 450 g of solution? What is the % composition of a solution where 80 g of sucrose is dissolved in 450 g of water? How much KBr is contained in 250 g of a 17 % KBr solution?

5. Mole fraction What is the mole fraction of a solution where.80 mol of sucrose is dissolved in 4.5 mol of water?

6. Density What is the mass of 50 ml of a 1.05 g/ml NaCl solution? What is the density of a solution where 80mL has a mass of 78 g? What is the volume of 12 g of a 1.10 g/ml solution?

7. Colligative properties What is the molality of a sucrose solution that freezes at -2.40 o C? What is the molality of a NaCl solution that freezes at -2.40 o C? What is the molality of a BaCl 2 solution that freezes at -2.40 o C?

8. Colligative properties What is the molality of a non-electrolyte solution that boils at 102.40 o C? What is the boiling point of a solution of 41 g of FeCl 3 dissolved in 200. g of water?

9. Colligative properties What is the vapor pressure, at 100 o C, of a 4.6 m KCl solution? Ethanol boils at 58 o C. If ethanol and water are mixed, with the solution have a higher or lower vapor pressure than water at the same temperature?

10. Intermolecular forces Compare HCl and F 2 1)What types of substances? 2)What types of particles do they have? 3)What types of IM forces exist within each substance? 4)Which type of force (q. 3) is strongest? 5)Which has the higher boiling point? 6)If both were liquefied, would they dissolve when mixed?

11. Intermolecular forces Compare NaBr and CCl 4 1)What types of substances? 2)What types of particles do they have? 3)What types of IM forces exist within each substance? 4)Which type of force (q. 3) is strongest? 5)Which has the higher boiling point? 6)Will NaBr dissolve in CCl 4 ?

12. Hydrates A bottle from the stockroom has the formula Ca(C 2 H 3 O 2 ) 2 *H 2 O. Name the compound and calculate the percent water. What is the formula and % water in strontium chloride hexahydrate? A sample of hydrated barium chloride has 14.75% water. What is the formula and name of this hydrate?

13. Electrolytes Write the reaction of CaCl 2 dissolving in water What is i for CaCl 2 ? Will a CaCl 2 solution conduct electricity? Will solid CaCl 2 conduct electricity? Will molten (melted) CaCl 2 conduct electricity? A 1.00 m CaCl 2 solution has about the same molarity, mass % composition and density as a 1.00 m MgSe solution. How do their boiling points differ?