Consider the following data on some weak acids and weak bases:

acetic acid (HCH3CO2) - 1.8 x 10 ^-5
hydrocyanic acid (HCN) - 4.9x 10^-10

pyridine (C5H5N) - 1.7 x 10^-9
hydroxylamine (HONH2) - 1.1 x 10^-8

Use this data to rank the following solutions in order of increasing pH. In other words, select a '' next to the solution that will have the lowest pH, a '' next to the solution that will have the next lowest pH, and so on.


a) 0.1 M KCN
b) 0.1 M KI
c)0.1 M HONH3Cl
d)0.1 M C5H5NHBr