2
$\begingroup$

According to Wikipedia, sulfonic acid $(\ce{-SO3H})$ is comparatively stronger than carboxylic acid $(\ce{-COOH})$.

Then why is sulfonic acid lower in priority than carboxylic acid (while naming poly functional organic compounds) in this priority chart? Even my textbook prioritizes $(\ce{-COOH})$ over $(\ce{-SO3H})$.

Or is the strength not the only factor while assigning priority?

Correct me if I'm wrong or missing something. I'm currently learning about IUPAC nomenclature.

$\endgroup$
  • 1
    $\begingroup$ Acidity has no relation to nomenclature. $\endgroup$ – orthocresol Jan 14 at 11:21
  • $\begingroup$ Then why does -cooh get priority over -so3h? $\endgroup$ – user8718165 Jan 14 at 11:32
  • $\begingroup$ Because IUPAC published a book that says so. There is not much more to it than that... $\endgroup$ – orthocresol Jan 14 at 11:56
  • $\begingroup$ Did they do it just as such without any justification? $\endgroup$ – user8718165 Jan 14 at 12:27
  • $\begingroup$ Yes, pretty much. $\endgroup$ – orthocresol Jan 14 at 12:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.