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Acids and Bases: Strong and Weak, pH

  • Arrhenius acids give H+ ; Arrhenius bases give OH-

  • Bronsted-Lowry acids are H+ donors; B-L bases are H+ acceptors

  • Lewis bases are electron pair donors, like NH3 ; Lewis acids are electron pair acceptors like BF3

  • Common strong acids: HCl, HNO3 (monoprotic); H2SO4 (diprotic)

  • Common strong bases: NaOH, KOH, Ca(OH)2

  • Weak acid: acetic, CH3COOH

  • Weak base: NH3

  • Water is both weak acid and weak base; Kw = 1.0 x 10-14

  • Equilibria of weak acids and bases: Ka and Kb

  • pH = -log10[H+] ; pH = 7.0, neutral; pH < 7, acidic; pH >7, basic

Acids and Bases: Strong and Weak, pH

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

Advanced Placement Chemistry