Question

Consider the following data on some weak acids and weak bases: acid: hydrofluoric acid HF Ka = 6.8 x 10^-4, acetic acid HCH3CO2 Ka = 1.8 x 10^-5 base: methylamine CH3NH2 Kb = 4.4 x 10^-4, aniline C6H5NH2 Kb = 4.3 x 10^-10 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution: 0.1 M CH3NH3Cl, 0.1 M C6H5NH3Br, 0.1 M KBr, 0.1 M NaF