1a. Arrange the compounds in order of decreasing PKa. Highest First.
a. [tex]\mathrm{CH} 3 \mathrm{CH} 2 \mathrm{OH}[/tex]
b. [tex]\mathrm{ClCH} 2 \mathrm{CH} 2 \mathrm{SH}[/tex]
c. [tex]\mathrm{CH} 3 \mathrm{CH} 2 \mathrm{SH}[/tex]