Find molarity, molality, percentage composition, boiling and freezing point of a solution.
Data
Element Atomic wt Electronegativity
H 1.01 2.1
B 10.81 2.0
C 12.01 2.5
N 14.00 3.0
O 16.00 3.5
F 19.00 4.0
Molarity = moles /Litre
Molality = moles/ kg of solvent = Cm
%m/m = ( mass of component / mass of sample) x 100
?Tb = Kb.Cm Kb water = 0.512 BP pure water = 100 o C
?Tf = Kf. Cm Kf water = 1.858 FP pure water = 0.00 o C
Question
A solution contains 0.173g of glycerol, C3H8O3, and 20.0 g of water?
The density of water is 1.00g/mL
What are the Molarity, Molality and % m / m concentrations of the solution?
What are the boiling and freezing points of the solution?