CHMA11H3 Chapter Notes - Chapter 14: Equilibrium Constant, Partial Pressure, Reagent

• School: UTSC
• Department: Chemistry
• Course: CHMA11H3
• Professor: Heinz- Bernhard Kraatz

Document Summary

Dynamic equilibrium condition wherein the rate of the fwd rxn = reverse rxn: [products] & [reactants] = equal, but not constant. Reversible rxns can proceed both in fwd & reverse directions. Equilibrium constant (k) relative amnts of products & reactants @ equi: unit-less, [conc]"s = m = mol/l. Given the rxn: aa(aq) + bb(aq) cc(aq) + dd(aq) If the rxn takes place in gas phase, convenient to express k in terms of partial pressure: ex: 2 n2o5(g) 4 no2(g) + o2(g) | kp = Keq >> 1 | the position of equilibrium favours products. Keq << 1 | the position of equi. favours reactants. Derived from ideal gas law (pav = nart) and kc, kp: Kp = kc x: in which = diff. b/w # mols of reactants & mols of products. Assume all sol"ns are sufficiently dilute (large solvent)