March 24, 2009

March 24, 2009 - March 24, 2009 • Solubility product •...

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Unformatted text preview: March 24, 2009 • Solubility product • Common Ion • Kf complex ion formation • Donnan equilibrium • Cv and Cp • Heat engines and Heat pumps • Piston entropy • Entropy changes • States • Hess's law • Entropy path • Phase changes • Mixing entropy • Entropy of the universe • System and surroundings entropy • Free energy, spontaneity • Free energy equilibrium equilibrium constant • J/mol and Volts for free energy • Faraday's law Joules/mol and Volts • ΔG = -zFE E emf , voltage • ΔG(J/mol) • = -z(mol e/mol ion)F(C/mol)E(J/C) •-ΔG +E spontaneous • F Faraday’s constant 96,500Ccharge/mol charge = 10 5 C/mol • z mol charge/mol ion • A + B + → A + + B • A → A + + 1e- • B + + 1e- → B • One e transferred z = +1 • If E = 2V, ΔG = -(1)F(2V) = -2(10 5 )J/mol • Spontaneous A(s) to B(s) • Cu + Zn 2+ → Cu 2+ + Zn • Cu → Cu 2+ + 2e- • Zn 2+ + 2e- → Zn • z = 2 E = -1.1V • ΔG = -2(10 5 )(-1.1) = 220,000J/mol Relation between G and K...
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This note was uploaded on 02/26/2012 for the course CHEM 108 taught by Professor Dr.brennan during the Spring '09 term at Binghamton.

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March 24, 2009 - March 24, 2009 • Solubility product •...

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