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Unformatted text preview: 2 O(g). Dessicant(s) + H 2 O(g) Hydrated Solid + heat Co +2 (s) + n H 2 O(g) Co(OH 2 ) n +2 (s) + heat 4. Equilibrium Constants Change with Temperature: t he van’t Hoff Equation : ⋅= = ∆ ∆ T T T T R H T T R H K K ln 1 2 1 2 rxn 2 1 rxn 1 2 1 1 The ClausiusClapeyron Equation is a “special case” of the van’t Hoff Equation. 5. The Relationship of Rate k’s to the Equilibrium K For A + 2 B 2 C + D , assume simple, single step mechanisms, both ways. The rate laws are: Rate – forward reaction = Rate – reverse reaction = At equilibrium, (Rate – forward) = (Rate – reverse). Substituting from the rate laws: Factor the constants to the left and the variables to the right. 6. Converting Kp and Kc. Use PV = nRT with R = 0.08206 K mole atm L Problem: Find Kp for 3 H 2 (g) + N 2 (g) 2 NH 3 (g) if Kc = 0.52 at 400 °C. Kp = _____________...
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 Spring '08
 Staff
 Chemistry, Thermodynamics, Equilibrium, Van 't Hoff equation, n’t Hoff equation

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