AP Chemisty Equilibrium
Terms
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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