Solutions Review

Day 1: Solutions Know power words Be able to calculate M, m, % by mass or volume, Colligative properties: Fp depression, Bp elevation, vapor pressure lowering Be able to identify van Hoff’s factor i Know how temp, pressure, stirring affect solubility of solid and gas solutes Be able to read solubility curve like KNO3 lab (unsaturated, saturated, supersaturated), if amount of solute changes… For problem solving, you need to explain properties and describe why they happen

Solubility Curve

Which will have the highest boiling point for a 3.50m solution? Solvent Kf Freezing Point Kb Boiling Point Ethanol 1.99 ˚C/m 114.6 ˚C 1.22 ˚C/m 78.4 ˚C Acetic Acid 3.90 ˚C/m 16.6 ˚C 3.07 ˚C/m 117.9 ˚C Ether 1.79 ˚C/m -116.3 ˚C 2.02 ˚C/m 34.6 ˚C Which will have the highest boiling point for a 3.50m solution? Find the freezing point for a 2.00m solution of acetic acid. What is the molality of a solution that changes the boiling point of ether to 36˚C?

How many milliliters are there in a 3 How many milliliters are there in a 3.0M solution when there are 490 grams of KNO3? How many grams of NaCl are there in a 0.5M solution with 4056 mL? If the solubility of NaCl is 75g/100mL at 100C, what will the solubility be if there were only 50mL?

If the solubility of HCl is 26 If the solubility of HCl is 26.5g/100g water, what mass can be dissolved in 200g of water?

Solutions with water as the solvent are called?

What expression defines molarity?

What expression represents molality?

How does temperature affect the solubility of gases and solids?