810.2 Mechanism assumption and Approximate treatment 10.2.1 Approximation treatment of complex reaction mechanism Necessary of approximation treatment 1)Br2->2Br AA>B—kC 2)Br·+H,—>HBr+H k, 3)正.+Br2->HBr+Br exp(k,)-exp(] k-k A4)H+HBr→→H2+Br 5)2Br·—>Br2 k exp(k,t) k2-k1 dhAr ? k1 exp(kt) k2-k1Necessary of approximation treatment 10.2.1 Approximation treatment of complex reaction mechanism A B C 1 2 ⎯⎯→ ⎯⎯→ k k exp( ) exp( ) 1 2 2 1 1 k t k t k k k a y − − − − =               − − + − − − = exp( ) 1 exp( ) 2 2 1 1 1 2 1 2 k t k k k k t k k k z a 1) Br2 ⎯→ 2Br 2) Br + H2 ⎯→ HBr + H 3) H + Br2 ⎯→ HBr + Br 4) H + HBr ⎯→ H2 + Br 5) 2Br ⎯→ Br2 d[HBr] ? dt = §10.2 Mechanism assumption and Approximate treatment