We are investigating the keto-enol tautomerization of acetylacetone (pentane-2,4-dione) in an aqueous solutions at 25 degrees Celsius. The standard reaction Gibbs energy for the enol<--->ketone tautomerization is -3.64 kJ/mol. (a) Find the equilibrium constant of the tautomerization reaction. (b) Find the equilibrium molar concentrations of the keto and enol forms of acetylacetone in a solution where the total (keto+enol) concentration of acetylacetone is 0.1 mol dm^-3.