Organic chemistry ranking acid strength?

Question

Hi,

I was working on homework for my organic chemistry course, and was confused on this question. How would I go about ranking these?

Thank you in advance!

Answer 1

4>>2>3>1

The main factor to consider is the stability of the anion which each will produce. Sulfonic acids are only a little weaker than mineral acids. The benzoate anion is stabilised by the benzene ring. Phenols are more acidic than alcohols.