Equilibrium

True Or False: At equilibrium rate f = rate r

True

Direction Of Equilibirium; if

Le Chatelier’s Principle: Concentration

Hint: reaction shifts to which ever side has less concentration

If product is removed/reactants added Qc<Kc, so EQ shifts forwards

If products is added/ reactants removed Qc>Kc, so EQ shifts backwards

Chatelier’s Principle: Volume

DEPENDS ON STOICHIOMETRY & only applies to gases, (Qc depends on the equation)

If volume DECREASES it will shift to the side with less moles OF GAS

If volume INCREASES it will shift to the side with more moles OF GAS

Chatelier’s Principle: Temperature

Increasing temp: endothermic EQ shifts right (products)

Decreasing: exothermic, EQ shifts left (reactants)

True Or False: The value of K changes with temperature

True

How so catalysts speed up reactions?

They lower the activation energy for the forwards and backwards reaction 

True Or False: Catalysts affect the Rate of equilibrium (K)

False

If H is negative its a ________ reaction 

exothermic

If H is positive its a _______ reaction

Endothermic

Explain the relationship between K and 10³

K>10³: Reaction shifts right

10^-3<K>10³: Neither products or reactants are favored

K<10³: Reaction shifts left