Question

Rank these acids in order of acidity (from most to least) and briefly explain why?
H2F+
(CH3)2OH+
CH3OH
CH3SH2+

Answer 1

When I talk about acidity I'm talking about Brønsted acidity (The ability to donate a proton)

Answer 2

The correct answer is

H2F+ > CH3SH2+ > (CH3)2OH+ > CH3OH

if anyone was interested here is a explanation from note this is not my work,

" The ionization process depends upon the breaking of the bond to hydrogen, so the weaker the H–X bond, the stronger the acid. Bond energies usually decrease down a group, because the distance between nuclei increases. The element effect gives the acidity ranking H2F > CH3SH2 > (CH3)2OH . The charge effect makes CH3OH the least acidic. The reason that H2F is more acidic than CH3SH2 is that HF is more acidic than CH3SH. The charge effect should make both more acidic, and we assume that it should not change their relative order."