Chapter 11
List the IMFs in terms of increasing strength.
Define colligative properties.
List the formulas for molarity, molality, percent by mass, mole fraction.
mol of solute/ L of solution
mol of solute/ kg of solvent
mol solute/mol of solution
mass solute/mass solution * 100
Determine the intermolecular forces present in H2O.
Which substance would you expect to be more soluble in H2O? CH3CH2CH2CH2OH or HOCH2CH2OH
What is HOCH2CH2OH.
Household hydrogen peroxide is an aqueous solution containing 3.0% hydrogen peroxide by mass. What is the molarity of this solution. Assume density is 1.02 g/mL.
What is the density, strength of intermolecular forces, volume of a gas, liquid, and solid?
Liquid- moderate IMFs, indefinite shape, definite volume, high density
Solid- strong IMFs, definite shape & volume, high density
A glucose solution contains 55.8 g of glucose (C6H12O6) in 455 g of water. Determine the freezing point of the solution. Assume the density is 1.00g/mL of water.
What is -1.27 degrees Celsius
An aqueous NaCl solution is made using 112 g of NaCl diluted with 1.00 L of water. Calculate molality. Assume density of water 1.08 g/mL.
What is 2.0 m
Describe the 5 segments of the heating curve of water.
Segment 1- ice is warmed to its melting point
Segment 2- melting point added heat does not change temperature
Segment 3- water is warmed to boiling point
Segment 4- boiling point, added heat does not change temp
Segment 5- steam warming occurs
An aqueous solution containing 17.5 g of unknown molecular (non electrolyte compound in 100.0 g of water has freezing point of -1.8 degrees Celsius. Calculate molar mass of the unknown.
1.8 * 102 g/mol
A hard water sample contains 0.00085% Ca by mass (Ca2+ cations). How much water in grams contains 1.2 g Ca?
What is 1.4 * 104 g