89.6 Rate Theories of elementary reaction 9.6.5 Comment on SCT (2) Shortcomings 1)For calculating k, Ec is needed. 2) The quantitative agreement between However, SCt can not give Ec. SCT and experiments is poor Calculation of k depends on the experimental determination of e Reaction 1094 1094 2NOCI-2NO+CI 2.95 3.23 0.91 H+Br2→>HBr+Br 46 6.76 6.76 NO+O3→>NO2+O 794 0.063 1.25×102 CH3+CHCI3>CH4+CCI3 1.26×10-3 1.19×104 2-cyclopentadiene- >dimer 8.13 245×106 3.32×10(2) Shortcomings 1) For calculating k, Ec is needed. However, SCT can not give Ec . Calculation of k depends on the experimental determination of Ea . 2) The quantitative agreement between SCT and experiments is poor. Reaction 10-9Acal 10-9Aexp Acal. /Aexp. 2NOCl→2NO+Cl2 2.95 3.23 0.91 H+Br2 →HBr+Br 46 6.76 6.76 NO+O3→NO2+O2 7.94 0.063 1.25102 CH3+CHCl3 →CH4+CCl3 15 1.2610-3 1.19104 2-cyclopentadiene →dimer 8.13 2.4510-6 3.32106 9.6.5 Comment on SCT §9.6 Rate Theories of elementary reaction