Question

Rank the given compounds based on their relative Brønsted acidities.

H-CH3

H-OH

H-Cl

H-F

H-NH2

Answer 1

Here is a table that lists the pKa for organic and inorganic compounds.
http://www.cup.uni-muenchen.de/oc/trauner/files/evans_pKa_table.pdf

For example, H2O is 15.7 and HF is 3.17. That means HF is a stronger acid than H2O. I couldn't find NH3 in that list but it is 9.25. Be sure you look in the water column and not the DMSO (dimethylsulfoxide) column for the right solvent.

Answer 2

no