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Glossary of AP Chemisty Equilibrium

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Law of mass action/ equilibrium expression
relationship between concentrations of reactants and products in a rxn at equilibrium
The equilibrium expression, contains only
concentration of aqueous particles, NO solids or pure liquids
For gases, the equilibrium expression
can be expressed in the partial pressures of the gases
Solubility product
Ksp a type of Keq
Large K value means...
products favored over reactants at equilibrium
Equation of relationship between Kp and Kc
Kp = Kc(RT)^(delta n)
R= .0821 Latm/molK
T=K
delta n = moles of product gas - moles of reactant gas
Q<K
rxn goes forward, generating products
Q>K
rxn goes backward, generating reactants
Q=K
at equilibrium
Two rxns added together, the Keq for overall rxn is...?
the individual rxn Keq MULTIPLIED together.
Haber process
Prep of ammonia:
N2(g) + 3H2(g) <-> 2NH3(g)
delta H^o = -92.6 kJ

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