Ch 6: Equilibrium Flashcards Preview

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Flashcards in Ch 6: Equilibrium Deck (13):
1

law of mass action

gives expression for the equilibrium constant, Keq
reaction quotient Q has same form but can be calculated at any concentration of reactants and products

2

Q is calculated value that

relates the reactant and product concentrations at any given time

3

Keq is the

ratio of products to reactants at equilibrium, with each species raised to its stoichiometric coefficient. it is constant at a constant temperature

4

do not appear in the law of mass action; only gases and aq do

pure s and l

5

if Q

delta G

6

if Q>Keq

delta G > 0 and reaction proceeds in the reverse direction

7

Le Chateliers principle

when chem system experiences a stress, it will react to restore equilibrium

8

_____ the concentration of reactants or ____ the conc or products will shift the reaction to the _____ and vis versa

increasing
decreasing
right

9

____ the pressure on a gaseous system (dec volume) will shift the reaction toward the side
____ and vis vera

increasing

with fewer moles of gas

10

____ the temperature of an endothermic reaction or ____ the temperature of an exothermic reaction will shift the reaction to the right or vis versa

increasing
decreasing

11

kinetic products are higher in ____ than thermodynamic products and can form at ____. Called fast products bc they can form more quickly under such conditions

free energy
lower temperatures

12

thermodynamic products are ____ in free energy than kinetic products and therefore more ___. despite proceeding more slowly than kinetic, the thermo pathway is more ___

lower

stable

spontaneous (more negative delta G)

13

reactions can have both kinetic and thermodynamic products that are regulated by

temperature and the presence of a catalyst