CHEM 201 - 9.14.07

CHEM 201 - 9.14.07 - Acid Dissociation Constant (k a )...

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CHEM 201 – September 14, 2007 Molecular Equation o 2 HCl (aq) + Cu(OH) 2 (s) CuCl 2 (aq) + 2 H 2 O (l) Ionic Equation o 2H + (aq) + 2Cl - (aq) + Cu(OH) 2 (s) Cu 2+ (aq) + 2Cl - (aq) + 2H 2 O (l) Net Ionic Equation o 2H + (aq) + Cu(OH) 2 (s) Cu 2+ (aq) + 2H 2 O (l) Dissociation of water – equilibrium gives the ion product constant o K w = [H + ][OH - ] = 1.0x10 -14 o pH ≡ -log[H + ] o pH + pOH = 14 o 2H 2 O  H 3 O + + OH - pH scale – 0 to 14 with no units where 7 is neutral
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Unformatted text preview: Acid Dissociation Constant (k a ) & Base Dissociation Constant (k b ) o Base constant rarely used o HA (aq) + H 2 O (l) H 3 O + + A-(aq) o K a = [H 3 O + ][A-]/[HA] concentration in M Varies with each equation based upon acid involved o Pure liquids are excluded from k a o...
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This note was uploaded on 04/07/2008 for the course CHEM 201 taught by Professor Harris during the Fall '07 term at Bucknell.

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