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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 ea t C M = a b aC B,0 M ea t  eb t M C D = C B,0  ( b  a )1 C B,0 [ b ea t  a eb t ] where a = k 1 C C = 7.298 hr1 and b = k 2 C C = 0.534 hr1 . 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
 J
 Reaction

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