Equilibrium

Question 1

Chemical equilibrium

Answer 1

Two chemical processes happening at the same time. Saturated solution

Question 2

Dissociation

Answer 2

Separation of ions that occur when a compound dissolves

Question 3

What causes ionic compounds to dissociate

Answer 3

Water

Question 4

What kind of compounds that dissociate don’t come back together in a solution

Answer 4

Ionic compounds

Question 5

Dissociation equation…

Answer 5

NaCl(s) yields Na + (aq) + Cl- (aq)

Question 6

Precipitate

Answer 6

Solid formed during chemical reactions

Two solutions of ionic compounds as reactants.

Question 7

If an ionic compound is….you can’t write dissolution equation

Answer 7

Insoluble

Question 8

Why do precipitates form

Answer 8

Ions more attracted to each other than H20

Question 9

When determining precipitates form…

Answer 9

Make sure both reactants dissociate
Do the double displacement
Check the product solubilities

Question 10

Net ionic equations

Answer 10

Shows that substances change from reactant to product side

Question 11

Spectator ions

Answer 11

Ions that don’t change, not in net ionic equation

Question 12

Formula equation

Answer 12

Formulas of reactants and products

Question 13

Full ionic substances

Answer 13

Any substances in aq that break into ions are written

Question 14

Strong electrolytes

Answer 14

Any compound whose dilute aq solution conducts electricity well; this is due to the presence of the dissolved compounds in ion form

Question 15

Strong electrolytes…

Answer 15

Yield as only ions when dissolved in water

Question 16

Weak electrolytes

Answer 16

Constantly breaking apart and reform, therefore at any given time the concentration of an ion is small

Question 17

Ionization

Answer 17

When ions are formed from solute molecules by the action of the solvent

Question 18

Hydronium ions

Answer 18

When a hydrogen atom bonded in a polar covalent bond that is ionized in an aqueous solution released hydrogen.

Question 19

HCl

Answer 19

More attracted to water, than each other

Question 20

HF

Answer 20

Higher electro negativity, more attached to each other than water

Question 21

Strong electrolytes ionize completely (100%), while weak electrolytes ionize only partially (usually on the order of 1–10%).

Answer 21

.

Question 22

Why do strong electrolytes dissolve 100%

Answer 22

They can be divided into acids, bases, and salts, because they all give ions when dissolved in water.

Question 23

Molality

Answer 23

moles solute/kg solvent

Question 24

Colligative properties

Answer 24

Properties of water solution that depend only on the number of solute particles dissolved.

Question 25

What are the four colligative properties

Answer 25

Vapor pressure Freezing point Boiling point Osmotic pressure

Question 26

Vapor pressure takes place in what phase

Answer 26

Gas phase

Question 27

What is vapor pressure

Answer 27

Pressure caused by particles in gas phase that are in equilibrium with liquid phase.

Question 28

What happens during vapor pressure

Answer 28

Solute particles get in the way of solvent going into gas phase Particles in gas phase, vapor pressure is lower for a solution vs pure solvent

Question 29

Freezing point

Answer 29

Substance goes from solid to liquid and loses energy to get solid structure

Question 30

If water is solvent it’s freezing point is...

Answer 30

0

Question 31

Boiling point

Answer 31

Increase in boiling point of a solution as compound to te boiling point of the pure solvent

Question 32

More moles in boiling point the more it will...

Answer 32

Change

Question 33

Osmotic pressure

Answer 33

diffusion: spontaneous movement of a substance from Hugh concentration area to low, until evenly distributed

Question 34

When will osmotic pressure change

Answer 34

Based on number of particles on one side of a membrane

Question 35

Particles decrease when adding solute in...

Answer 35

Vapor pressure and freezing point