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Gchem Equilbrium
N.A
11
Chemistry
Undergraduate 3
06/14/2012

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Cards

Term
Is delta H affected by temp?
Definition
No, heat of transition (delta H) is not a function of temp and thus will not be effected
Term
When can eq. constant be neg?
Definition
Never, must always be pos. can't even be zero.
Term
equation for eq. constant.
Definition
Keq= [prod]/[react]
Term
value of equilib. constant when rxn favours, reactants, prods, or balance of both.
Definition
rxn favours reactants: Keq < 1
rxn balance reactants and prod: Keq =1
rxn favours prod: Keq > 1
Term
define delta H
Definition
heat of transistion
measures amount of energy required to compelte transition
Term

Le Chatlier's Principle

for how changes in temp after exo and endo reactions.

Definition
exothermic: increase temp: rxn shift left decrease temp: rxn shift right endo: increase temp, rxn shift right decrease temp: rxn shift left
Term
formula for solubility product
Definition

for rxn: aA + bB = cC + dD

 

Ksp = [C]c[D]d

          [A]a[B]b

Term
Le Chatelier's Principle on how changes in volume affects gases
Definition

decrease volume: partial pressure increases: side with smaller moles of gas favoured

 

increase volume: partial pressure decreases: side with greater moles of gas favoured

Term
Le Chatelier's common ion effect
Definition
when the molar solubility of slightly soluble salt is decreased by the presence of another solute that supplies a common ion.
Term
the electrochemical cell can be operated at atmospheric rather than high pressure because?
Definition
electrical work serves to drive the reaction
Term

given the reaction:

N2(g) + H2(g) ↔ NH3(g)

if ammonia is continuously removed, the reaction is given forward based on whose principle?

Definition

Le Chaterlier's principle.

 

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