1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Which is More Acidic?

  1. Dec 4, 2009 #1
    Which is more acidic, 4-nitrophenol or 2-fluoro-4-nitrophenol?

    I think it would be 2-fluoro-4-nitrophenol because acidity is increased by the presence of electron withdrawing groups. 2-fluoro-4-nitrophenol has two electron withdrawing groups as opposed to only one for 4-nitrophenol. Is that correct? Should I also consider resonance when answering this question?
  2. jcsd
  3. Dec 4, 2009 #2


    User Avatar

    Sounds good to me. I would say that yes, you probably should consider resonance (the more resonance forms, the more stable the phenolate anion), just to show why the para nitro group draws electrons away from the ring. Also, since there's only one F, that shouldn't interfere with anything, it'll just inductively draw electron density from the ring.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook