February 25, 2009

February 25, 2009 - February 25, 2009 Topics List Kinetics...

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February 25, 2009
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Topics List Kinetics 8 questions Writing rate equations First order half lives Rate ratios for order Steady state Activation energy Collision theory Arhenius plots Equilibrium 12 questions Manipulating eqm constants Kp vs Kc Equilibrium using x Multiple equilibria Bronsted Lowry acids and bases pH, Kw LaChatelier Neutralization Weak acids/buffers
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Solubility Products Solubility – given as combined salt concentration in solution even if separated Solubility of AgCl 10 -5 This means Ag + Cl - → Ag + (aq) + Cl - (aq) Ag + = 10 -5 Cl - = 10 -5 M
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Equilibrium amount dissolved related to sum of energies for each ion This translates into a product of concentration = an equilibrium constant the solubility product K sp = [Ag + ][Cl - ] = 10 -5 10 -5 = 10 -10 Note AgCl(s) ↔ Ag + (aq) + Cl - (aq) Only products participate in K sp
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CaCl 2 1Ca 2+ + 2Cl -1 if Ca 2+ = x, Cl - = 2x K sp = [Ca 2+ ][Cl -1 ] 2 = x(2x) 2 X also “solubility” of CaCl 2 use to find K sp
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February 25, 2009 - February 25, 2009 Topics List Kinetics...

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