Solutions and solubility

Question 1

What is solution?

Answer 1

Homogeneous mixture where the parts are not visible

Question 2

What are the two parts of a solution?

Answer 2

Solute (minority component) and solvent

Question 3

You can’t have multiple solutes

Answer 3

False

Question 4

What is solubility

Answer 4

The amount of substance that will dissolve in a given amount of solution

Question 5

Dynamic equilibrium

Answer 5

When dissolving and recrystallization are in balance

Question 6

What happens in a supersaturated solution?

Answer 6

The temperature increases to allow more of that solute to dissolve.

Question 7

Saturated solution

Answer 7

The dissolved solute is in dynamic equilibrium with the undissolved solute, so if you add more, it will not dissolve

Question 8

Unsaturated solution

Answer 8

It contains less than the equilibrium amount of solute, so if you add more, it will dissolve

Question 9

Solubility of most solids ___________ with increasing temperature

Answer 9

increases

Question 10

What is a good purifying technique?

Answer 10

Recrystallization; when allowed to cool slowly, a crystalline structure will reject any impurities

Question 11

What are some factors affecting the solubility of gases in water?

Answer 11

Temperature = gases like to dissolve in cold solvent, so if a solution is at a higher temperature, then dissolved gases come out of it
Pressure = It is easier to dissolve gases at higher pressure;  gases will leave solvent at lower pressures

Question 12

What should be done if we want to dilute a solution?What if we want to increase the concentration?

Answer 12

Add a small amount of solute in some amount of solvent; add a large amount of solute in some amount of solvent

Question 13

What are some examples of colligative properties?

Answer 13

Vapor pressuring, boiling point elevation, freezing point depression