Chem Ch 12 A quiz

Question 1

What are solutions

Answer 1

Homogenous mixtures in single phase

Question 2

Solvent

Answer 2

Major part of solution
Does the dissolving
Ex: aceton, water

Question 3

Solutes

Answer 3

Dissolved substances in solution

Question 4

Properties of solutions

Answer 4

Solutes cannot be filtered out of a solution
Solutes do not settle out of solution
Solutions are uniform
Solutions are not chemically combined
Solutions can vary in their concentrations

Question 5

Types of Solutions

Answer 5

Liquid (soda, coffee, household cleaner)
Solid (gold rings, steel bars, staples)
Gaseous (atmosphere, scuba tank gas, cooking stove gas)

Question 6

Liquid solutions: Miscible, immiscible

Answer 6

Miscible; 2 liquids mix to form homogenous mixture
Immiscible: when liquids separate after mixing

Question 7

Solvation

Answer 7

Dissolving process in solid and liquid solutions
Solvent molecules (ex water) surround and separate solute molecules/ions (ex salt)

Question 8

Gaseous

Answer 8

Gases cannot dissolve liquid or solid particles at normal pressures

Question 9

How do things dissolve in liquid solutions

Answer 9

Solvation: Dissolving process in solid in liquid solutions

Question 10

How do things dissolve in solid and gaseous solutions

Answer 10

Mix chiefly by diffusion

Question 11

Where do we encounter diffusion in the real world

Answer 11

Cheap perfume/cologne, farts

Question 12

Can you dissolve anything

Answer 12

Yes and no
Yes- polar solvents dissolve polar solutes vice versa with nonpolar
No- polar cannot dissolve nonpolar (water and oil)

Question 13

Solubility

Answer 13

Max amnt of solute that can dissolve in specific solvent under specific conditions

Question 14

Insoluble

Answer 14

Inability of solute to dissolve in certain solvent

Question 15

Solution equilibria

Answer 15

Unsaturated: More solute can still be dissolved
Saturated: Solution contains max amnt of solute at given temp

Question 16

Dynamic equilibrium

Answer 16

Both processes (Dissociation and its reverse) are occuring at same rate

Question 17

Supersaturation

Answer 17

Solution contains more dissolved solute than it does at equilibrium

Question 18

Factors that affect rate of solution

Answer 18

Temp
Stirring
Surface area exposed to solvent

Question 19

How does temp affect solubility

Answer 19

Higher temps help solids and liquids dissolve
Adding heat = adding more reactant
Heat is product of gases dissolving

Question 20

Effervesecence

Answer 20

Escape of gas from liquid-gas solution
Ex: Carbon dioxide from soda