2010-02-22 - Weak Acids and Bases

2010-02-22 - Weak Acids and Bases - pK log b b K pK log...

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PROPERTIES OF SOLUTIONS: Ch 7 – Acids and Bases References: - Chemical Principles, Steven S. Zumdahl, Fifth Edition, Houghton Mifflin Custom Publishing, Boston, MA - Professor Paul Mc Cord Notes, CH 302, University of Texas at Austin 1 Solution with the same concentration of different acids might not have the same pH. Weak Acids and Bases
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Acidity and Basicity Constants : CH 3 COOH (aq) + H 2 O (l) -------- H 3 0 + (aq) + CH 3 CO 2 - (aq) Eq. constant; K a = acidity constant; acid ionization; acid dissociation constant       COOH CH CO CH O H K a 3 2 3 3 NH 3 (aq) + H 2 O (l) -------- NH 4 + (aq) + OH - (aq)       3 4 NH OH NH K b Eq. constant; K b = basicity constant; base ionization constant a a K
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Unformatted text preview: pK log b b K pK log -The strength of an acid is measured by its K a-The strength of a base is measured by its K b-The smaller the constants, the weaker the respective strengths-The larger the values of pK, the weaker the acid or base The Conjugate Seesaw : -The stronger the acid, the weaker its conjugate base-The stronger the base, the weaker its conjugate acid w b a K K x K w b a K K K log log log w b a pK pK pK -The stronger the acid, the weaker its conjugate base-The stronger the base, the weaker its conjugate acid Molecular Structure and Acid Strength : The Strengths of Oxoacids :...
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This note was uploaded on 03/01/2011 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas at Austin.

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2010-02-22 - Weak Acids and Bases - pK log b b K pK log...

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