Lec-21-Chap16-2-bare

Lec-21-Chap16-2-bare - Lec-21-Chap16-2-bare 10/21/2011...

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Lec-21-Chap16-2-bare 10/21/2011 Acids and Bases. Ionization Constants. Percent Ionization. Weak Acids and Bases 1 Lec-22: Acids and Bases Chapter 16 1 Autoionization of Water 3 2 HO O 2H O H 3 14 1.0 10 at H 25 O C w K   In pure water: 3 OH 3 1 7 2 3 3 4 H O H O H 1.0 1 1.0 1 OH 0 O 0 ww w KK K   2
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Lec-21-Chap16-2-bare 10/21/2011 Acids and Bases. Ionization Constants. Percent Ionization. Weak Acids and Bases 2 The pH Scale 3 pH log H O , pOH log OH        3 7 7 pOH pH log H O log 1.0 1 log OH log 1.0 0 7 7 0 1         3 In pure water 1 3 7 OH 1.0 10 m H o O l  4 3 , log O H l g H O H po 3 14 1.0 1 H 0 O w K        1 3 4 log H lo log OH g log 1. 0 O 01 w K   pK 14 pH w   pK pK log , 10 w w w w KK
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Lec-21-Chap16-2-bare 10/21/2011 Acids and Bases. Ionization Constants. Percent Ionization. Weak Acids and Bases 3 The pH Scale 3 pH log H O , pOH log OH    For aqueous solutions at 25°C 7 7 3 77 3 7 3 mol mol Acid pH 7 H O 10 ; O mol Neutral pH 7 H O OH 10 mol mol Basic pH 7 OH 10 ; H O 1 H 0 10      5 Ionization Constants of Acids and Basis The magnitude of the ionization constants of acids and bases give us an immediate idea of their strength.         2 3 H HA O Aa aq q H O aq  Acid Ionization Constants:     3 acid ionization , constant H HO pK log A A aa a K K Weak acids have   weak acids , 0 p0 1 K a a K 6
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Lec-21-Chap16-2-bare 10/21/2011 Acids and Bases. Ionization Constants. Percent Ionization. Weak Acids and Bases 4 Ionization Constants of Acids and Basis When a solution of acetic acid is prepared 0.01 mol L –1 41 3 H O 4.15 10 mol L    For acetic acid   5 3 1.8 1 HA 0 HO A a K 7 Ionization Constants of Acids and Basis 8     3 3 at equilibrium initial concentration 0 ac
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This note was uploaded on 03/06/2012 for the course CHE 132 taught by Professor Hanson during the Fall '08 term at SUNY Stony Brook.

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Lec-21-Chap16-2-bare - Lec-21-Chap16-2-bare 10/21/2011...

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