Question

Select the strongest acid among the following compounds.

• A. $FCH _{2} CH _{2} CH _{2} OH$
• B. $H _{3} CCH _{2} \underset{\overset{|}{F}}{C}H - CH _{2} OH$
• C. $CH _{3} CH _{2} CF _{2} CH _{2} OH$
• D. $CH _{3} \underset{\overset{|}{F}}{C}HCH _{2} CH _{2} OH$

Answer 1

Answer: (C)

$CH _{3} CH _{2} CF _{2} CH _{2} OH$ is the strongest acid due to more $I$-effect of two fluorine atoms.