Advices For Studying Organic Chemistry

(Wang) #1
1) Total Ionic Reaction

H O+ + −O O
H

H Cl − + Na+ H H +
H

(^2) Na+ + Cl−
Spectator inos
2) Net Reaction
O+ +H−O O
H
H^2
H
H H
3) The Net Reaction of solutions of all aqueous strong acids and bases are mixed:
H 3 O++ OH− 2H 2 O


3.2B THE LEWIS DEFINITION OF ACIDS AND BASES


  1. Lewis acid-base theory: in 1923 proposed by G. N. Lewis (1875~1946; Ph. D.
    Harvard, 1899; professor, Massachusetts Institute of Technology, 1905-1912;
    professor, University of California, Berkeley, 1912-1946).



  1. Acid: electron-pair acceptor

  2. Base: electron-pair donor


H+ + NH 3 H NH+ 3
Lewis acid
(electron-pair acceptor)

Lewis base
(electron-pair donor)
curved arrow shows the donation of the electron-pair of ammonia

Cl Al + NH 3 Al
Cl

Cl Cl

Cl

Cl − NH+ 3

Lewis acid
(electron-pair acceptor)

Lewis base
(electron-pair donor)
Free download pdf