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Homework Help: Role of HNO3 in nitration of benzene

  1. Jul 6, 2014 #1
    1. The problem statement, all variables and given/known data
    in this case, the HNO3 can be dissociated into NO2+ and OH- ion. what makes it a proton donor. p/s : the ans is HNO3 is a proton donor for this question.

    2. Relevant equations

    3. The attempt at a solution

    since the HNO3 can be dissociated into NO2+ and OH- ion, why it 's called as proton donor (acid), i would called it as alkaline... can someone explain on this plaese?

    Attached Files:

  2. jcsd
  3. Jul 6, 2014 #2
    I do not see how ##HNO_3## could act as a proton donor when clearly a stronger acid is present.
  4. Jul 6, 2014 #3


    User Avatar

    Staff: Mentor

    You got the nitric acid dissociation into NO2+ wrong - OH- is not between products.

    Hint: actually it is not HNO3 that dissociates into NO2+.
  5. Jul 26, 2014 #4
    Psst... hydroxide does not function well as a leaving group. So, why do you need the sulfuric acid for? Could it help create a good leaving group?
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