Concentrations of Solutions Molarity and Molality
Not what you're looking for?
Part A
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?
Part B
What are the boiling and freezing points of the solution that has a molality of
0.062?
Purchase this Solution
Solution Summary
The expert determines what is the molarity, molality and concentrations of the solution is determined.
Solution Preview
Part A
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?
Molarity = M = mole solute /liter solution
Mole glycerol = 0.173 g C3H8O3 (1 mol C3H8O3 / 92 g)
Mole glycerol = 1.88 x 10-3 mol C3H8O3
Volume of water = 20 g H2O (1 mL / 1 g) = 20 mL = 0.02 L
(Note: Since the amount of solute (glycerol) is very small, it can be assumed ...
Purchase this Solution
Free BrainMass Quizzes
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.