Question #34a11
1 Answer
These are equilibrium constants for various equilibrium reactions.
#K_"eq"#
If you have an equilibrium of the type
aA + bB ⇌ cC + dD
you can write an equilibrium constant expression:
You do NOT include the concentrations of solids or liquids in the
For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
For the reaction, C(s) + H₂O(g) ⇌ CO(g) + H₂(g)
#K_a#
If one of the reactants is an acid, the equation for the equilibrium is
HA + H₂O ⇌ H₃O⁺ + A⁻
The equilibrium constant expression is
To show explicitly that this equilibrium involves an acid, we call the equilibrium constant
So
For the dissociation of HF in water, we write
HF + H₂O ⇌ H₃O⁺ + A⁻
and