Subject: Does dilution change the acid ionization constant of a weak acid?

Diluting a weak acid that is already at equilibrium causes a decrease in the 
concentration of molecules in the system. Le Chatelier's Principle says that the 
equilibrium will shift toward more ionization in order to compensate for the 
stress of dilution. This will change the equilibrium constant for the weak acid. 
Is the constant, threfore, not really constant for a particular weak acid?

Re: Does dilution change the acid ionization constant of a weak acid?