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Homework Help: Lewis Acids

  1. Feb 13, 2005 #1
    It's been awhile since I've done chem and I don't really remember how to identify Lewis Acids too well so here are a few problems I'd like you guys to check over / correct:

    [tex]CaO(s) + SO_3(g) \rightarrow CaSO_4[/tex] My answer: [tex]SO_3[/tex]

    [tex]Ca^{+2}(aq) + SO_4^{-2}(aq) \rightarrow CaSO_4(s)[/tex] My answer: [tex]Ca^{+2}[/tex]

    [tex]Al(OH_2)_6^{+3} + H_2O \rightarrow Al(OH_2)_5OH^{+2} + H_3O^{+}[/tex] My answer: [tex]Al(OH_2)_5OH^{+2}[/tex]

    [tex]CaO(s) + H_2O(l) \rightarrow Ca(OH)_2(s)[/tex]. My answer: [tex]CaO(s)[/tex] but there's also another Lewis Acid according to the worksheet

    [tex]NaCl(s) \rightarrow (H_2O) Na^+(aq) + Cl^-(aq)[/tex]
    My answer: [tex]Cl^-[/tex] but there's another Lewis Acid according to the worksheet

    I unfortunately had to miss class for another exam the day of this lecture so I'm pretty clueless! Thanks in advance.
    Last edited by a moderator: Feb 13, 2005
  2. jcsd
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