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Unformatted text preview: dichlorobenzene respectively. Material balances for a constant volume batch reactor may be written as d C d t B = - k 1 C B C C d C d t M = k 1 C B C C - k 2 C M C C d C d t D = k 2 C M C C If the concentration of chlorine is assumed to remain constant, the equations may be integrated sequentially to yield C B = C B,0 e-a t C M = a b a-C B,0 M e-a t - e-b t M C D = C B,0 - ( b - a )-1 C B,0 [ b e-a t - a e-b t ] where a = k 1 C C = 7.298 hr-1 and b = k 2 C C = 0.534 hr-1 . The maximum concentration of M will occur when dC M /dt = 0. Differentiation yields t MAX = ( b - a )-1 ln ( b / a ) = 0.3866 hr b) At t = 0.3866 hr = 23.20 min, C M = 9.111 mol / L , C D = 1.423 mol / L Note : S = C M / C D = 6.40...
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- Spring '08