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CH 201: EXAM 3
aqueous solutions of strong acids
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Co = [H3O+]
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aqueous solutions of weak acids
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Ka = x2/(Co-x)
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aqueous solutions of strong base
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Co = [OH-]
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aqueous solutions of weak base
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Kb = y2/(Co-y)
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aqueous solutions of strong and weak acid
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approx => ignore weak acid
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aqueous solutions of strong and weak base
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approx => ignore weak base
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aqueous solutions of buffer (mix of weak acid and conjugate base)
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pH = pKa + log(nb/na)
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molar solubility
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Ksp = x(2x)2 ..... solve for x (ex. prob)
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canonical order
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Ox1 + Red2 + "other" = Red1 + Ox2 + "other"
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gains electrons
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oxidation state decrease, reduced, oxidizing agent
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lose electrons
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oxidation state increase, oxidized, reducing agent
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Eocell
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Eocath - Eoanode
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E =
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Eocell - (0.0592/n)logQ where Q = prod/reactants
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Ecell
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cell potential
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Eocell
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standard reduction potential
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