What is a supersaturated solution? How is this kind of solution made?.
What happens to the boiling point and freezing point of water when salt is added?.
How can you increase the rate at which a solute dissolves in a solvent?.
What kinds of compounds are electrolytes and why.
What two processes are equal when solubility equilibrium is reached?.
Carbon tetrachloride and water are immiscible in each other. Explain.
How does temp effect the solubility of a gas and solid.
Why do cities add salt to the roads in the winter?.
When is a reaction at chemical equilibrium?.
.
Chapter 15.
Properties of Solutions.
Solute.
Solvent Example.
Soluble.
Insoluble Example.
How can you tell which subs is the solute and which is the solvent.
Types of Solutions.
Solid Solutions.
Alloys = .
How are alloys formed?.
Gaseous Solutions.
Liquid Solutions.
Miscible.
Immiscible: Example.
Aqueous Solutions.
Aqueous solution = water as solvent.
Electrolyte = substance that dissolves in water to form solution that conduct electricity.
EX Why do electrolytes conduct electricity? Ionic compound .
Non -electrolyte = substance dissolve in water doe not conduct electricity.
.
Concentration of Solutions.
A concentrated solution contains: Large amt. of solution to amt. of solvent.
Ex punch syrup sugar to water.
Dilute solution = small amt.
Concentration of a solution is amt. of solution to amt. of solvent.
Molarity (M).
Most common expression of solution concentration .
Number of moles to solvent dissolve in e? of solvent.
molarity = moles of solvent .
L of solution?.
A volumetric flask is used to make solution of a precise molarity?.
Practice problem .
Vinegar is a solution of acetic acid. What is the molarity of the solution produced when 125 g of acetic acid (C2H4O2) is dissolved in sufficient water to prepare 1.5 L of solution?.
1.3 grams.
How many grams of bromine are needed to prepare 0.500 L of a 0.0100 M solution of bromine in water? .79 grams.
Try to figure these out on your own. .
M1V1 = M2V2 M = molarity V = volume (liters).