Acids And Bases Worksheet - Michalek, Unit 14 Page 17
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27AP Chemsitry--Michalek
17
Unit 14 Acids and Bases
14.11 The Lewis Model
Read and outline 14.11
Define
Lewis Acid
Lewis base
Rewrite Table 14.10
3+
How is Al
and acid in water?
Notes 14.11
The reaction of the Lewis acid BF3 with the Lewis base NH3. The electrostatic potential maps show that the B atom is
electron poor (blue) and the N atom is electron righ (red). The geometry about boron changes from trigonal planar in
BF3 to tetrahedral in the adduct. Both boron and nitrogen use sp3 hybrid orbitals in the adduct.
Lewis Acid—Electron acceptor
Lewis Base—Electron donor
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