 At Equilibrium the concentrations are as follows:
 [H+]=1.9*10^-6 M
 [OH-]=5.1*10^-9 M
 [H2CO3]=1.1*10^-5 M
 [HCO3-]=1.9*10^-6 M
 [CO3 2-]=4.8*10^-11 M