Chlorobenzene (l) is produced by reacting benzene (l) initially at 30C with Cl 2 (g) initially at
Question:
Chlorobenzene(l) is produced by reacting benzene(l) initially at 30°C with Cl2(g) initially at 30°C in a batch reactor using AlCl3 as a catalyst. HCl(g) is a by-product. During the course of the reaction, the temperature increases to 50°C. To avoid dichlorobenzenes, conversion of benzene is limited to 80%. On the basis of 1 mol of benzene, and 0.5 mol Cl2(g) feed, what heating or cooling is required using the specified method(s)?
(a) The NIST WebBook reports the heats of formation for liquid benzene and chlorobenzene as 49 kJ/mol and 11.5 kJ/mol, respectively. The heat capacities of liquid benzene and chlorobenzene are 136 J/mol-K and 150 J/mol-K, respectively. Use liquid reference states for the benzenes and the heat of reaction method for the energy balance.
(b) Follow part (a), but instead, use the heat of formation method for the energy balance.
(c) Use an ideal gas-phase reference state for the benzenes, Eqn. 2.45 to estimate the heat of vaporization, and the Heat of Reaction method.
Step by Step Answer:
Introductory Chemical Engineering Thermodynamics
ISBN: 9780136068549
2nd Edition
Authors: J. Elliott, Carl Lira