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Flashcards in Equilibrium Deck (29):
1

What is equilibrium?

State at which both forward and reverse reactions will occur at a constant rate

2

If Keq is greater than one what is favored?

Products

3

If Keq is less than one what is favored?

Reactants

4

If Keq is equal to 1 what does this mean?

Reaction has equal amounts of reactants and products

5

If Q is less than Keq what is favored in reaction?

Forward. Products

6

If Q is greater than Keq what is favored?

Reverse. Reactants

7

Le chateliers principle

If a system is in equilibrium it will try to neutralize any imposed change to reestablish equilibrium

8

According to LCP if pressure is increased and volume is decreased what direction is the reaction favored?

Towards direction with lower amounts of gas to reestablish equilibrium

9

According to LCP if there is a decrease in pressure and increase in volume, which direction is favored in reaction?

The direction with more moles of gas to reestablish equilibrium

10

If add catalyst to a system at equilibrium, what occurs?

Nothing because it increases rate of both forward and reverse equally

11

What are electrolytes?

Free ions in a solution that can conduct electricity

12

Describe solubility of strong electrolytes

Dissociate completely and are better conductors

13

Describe solubility of weak electrolytes

Partially dissociate

14

What is a vant hoff factor?

Tells how many ions one unit of substance will produce in a solution

15

What is a saturated solution?

Solution in which no more solute will dissolve. Precipitation occurs at the same time as dissolving. Solid form and dissolved form are at equilibrium

16

What does solubility vary with?

Temperature

17

The solubility of solids in liquids increases when what happens

Temp increases

18

Solubility of gases in liquids tend to what with temp

Decrease with temp

19

Solubility with gas in liquid tend to what with pressure?

Increase with pressure

20

Are silver, lead, and Mercury salts soluble or insoluble

Insoluble. Unless paired with nitrate, perchlorate, or acetate

21

What group of metal salts are soluble?

Group I

22

Are ammonium salts soluble?

Yes

23

What 3 negatively charged salts are soluble?

Nitrate, perchlorate, and acetate

24

What is the effect of partial pressure of gas above liquid on solubility?

As this partial pressure increases, dissolved gas increase but equilibrium constant remains the same

25

What is molar solubility?

Number of moles of salts that will saturate a liter of water

26

If the ion product is less than solubility product constant, which direction is reaction favored?

Forward. More salt can be dissolved

27

If ion product is greater than solubility constant, what direction of reaction is favored?

Reversed. Excess salt will precipitate

28

If ion product is equal to solubility constant, what does this tell us?

Solution is saturated

29

Common ion effect

Molar solubility decreases if another solute is added that has the same ion