89.6 Rate Theories of elementary reaction Two important empirical rules Rate equation(law of mass action)r=kAIB] A rrhenIus equation k=Aexp RT Type of Unimolecular Bimolecular Termolecular reaction reaction reaction reaction 101 10 moIl·dm3s mor.dm.s A seems related to collision frequency. E exp Boltzmann distribution term RTTwo important empirical rules: Rate equation (law of mass action) Arrhenius equation       = − RT E k A a exp Type of reaction Unimolecular reaction Bimolecular reaction Termolecular reaction A 1013 s 1011 mol-1 dm3 s -1 109 mol-2 dm6 s -1 A seems related to collision frequency.       − RT Ea exp Boltzmann distribution term r k = [A][B] §9.6 Rate Theories of elementary reaction