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1 2 - 8 A liquid - phase reaction A + B C is conducted in a 5 0 - L batch reactor. The reaction

12-8 A liquid-phase reaction A+BC is conducted in a 50-L batch reactor. The reaction is first-order with respect to each reactant.
(a) Determine the time required for 90% conversion of A,if(i) the reaction occurs adiabatically; (ii) the reaction occurs isothermally at To.
(b) Determine Q and Tc(as functions of time), if a cooling coil is placed in the tank to maintain the isothermal conditions required in (a) part (ii).
(c) For (a) part (i), sketch the conversion-versus-time and temperature-versus-time profiles. Data: cAo and cBo are 0.50molL-1 and 0.75molL-1, respectively. The initial temperature (To) is 400K, and the heat capacity of the reactor contents is 3.8Jg-1K-1. The fluid density is 0.75gcm-3, and the heat transfer parameter (UAc) for part (b) is 100WK-1. The reaction is exothermic (-145(kJ)((mol)(A))-1), and kA=1.4107e-7700TLmol-1min-1.
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