Lewis Acids and Bases

• A Lewis Acid is a substance that can accepta a pair of electrons

• A Lewis Base is a substance that can donate a pair of electrons

• Example

  • H+ + H2O ? H3O+
  • BeCl2(s) + H2O(l) ? [Be(H2O)4]2+(aq) + 2 Cl-(aq)
  • [Be(H2O)4]2+(aq) + H2O ? [Be(H2O)3(OH)]1+(aq) + H3O+

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