Consider the following data on some weak acids and weak bases: acid base
Ka name formula kb name formula
6.8x10-4 hydrofluoric acid HF 1.7x10-9 pyridine C5H5N
1.8x10-5 acetic acid HCH3CO2 6.4X10-4 ethylamine C2H5NH2
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.
Solutions
0.1M KF
0.1M KCl
0.1M C5H5NHBr
0.1M C2H5NH3Cl