mathwiz Posted May 17, 2014 Report Share Posted May 17, 2014 which species can act as a a lewis acid ?A. BF3B. OH-C. H20D. NH3I Though the answer was h2o because it is amphoteric but the answer is Acan someone explain this to me?also how do you find the IB discus ion subject reports on this? 1 Reply Link to post Share on other sites More sharing options...
Abdelbari Posted May 17, 2014 Report Share Posted May 17, 2014 which species can act as a a lewis acid ?A. BF3B. OH-C. H20D. NH3I Though the answer was h2o because it is amphoteric but the answer is Acan someone explain this to me?also how do you find the IB discus ion subject reports on this?It is A, because all of the other options are Bronsted-Lowry acids or bases, hence all of them could either accept or donate (H+), except for BF3, which only accepts an electron pair 2 Reply Link to post Share on other sites More sharing options...
Negotiation Posted May 17, 2014 Report Share Posted May 17, 2014 AFAIK, all Bronsted-Lowry acids are Lewis acids. However, Lewis acids can accept electron pairs. Boron is the only element here that doesn't have a full valence shell, so it can indeed accept an electron pair. Reply Link to post Share on other sites More sharing options...
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