(Solved): 5. Barbituric acid, HC4H3N20, is used to prepare various barbiturate drugs. Calculate the concen ...

5. Barbituric acid, HC4H3N20?, is used to prepare various barbiturate drugs. Calculate the concentrations of hydronium ions and bariturate ion in a 0.1 M solution of the acid. The Ka is 9.8 x 10-5. HC4H?N2O3 + H?O <----> H?O + C4H?N?O3 6.Write the chemical equation for the base ionization of aniline, C6H5NH2. Write the Kb expression for aniline. 7. Trimethylamine, (CH3) 3N, is a gas with a fishy, ammonia-like odor. An aqueous solution that is 0.25 M trimethylamine has a pH of 11.63. What is the Kb for trimethylamine? (CH3) 3N+H?O <----> H (CH3) 3N+ + OH-