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A dilute aqueous solution of acetic anhydride is to be hydrolyzed continuously at 25°C. At this temperature the rate equation for the disapperance of anhydride is -TA= 0.158CA, g mol /(cm)(min) where C is the concentration of anhydride, in gram moles per cubic centimeter. The feed rate to be treated is 500 cm?/min of solution, with an anhydride concentration of 1.5 x 104 g mol/cm². There are two 2.5 liter and one 5 liter reaction vessels available, with excellent agitation devices. a-) Would the conversion be greater if one 5 liter vessel were used as a study flow tank reactor or if the two 2.5 liter vessels were used as reactors in series? In the latter case all the feed would be send to the first reactor and the product from that would be the feed to the second reactor. b-) Would a higher conversion be obtained if the two 2.5 liter vessels were operated in parallel; that is, if 250 cm3/min of feed were fed to each reactor and then the effluent streams from each reactor joined to form final product? Assume that the density of the solutions is independent of concentrations and that operation is steady state.

Question-AnswerCategory: Chemical Reaction EngineeringA dilute aqueous solution of acetic anhydride is to be hydrolyzed continuously at 25°C. At this temperature the rate equation for the disapperance of anhydride is -TA= 0.158CA, g mol /(cm)(min) where C is the concentration of anhydride, in gram moles per cubic centimeter. The feed rate to be treated is 500 cm?/min of solution, with an anhydride concentration of 1.5 x 104 g mol/cm². There are two 2.5 liter and one 5 liter reaction vessels available, with excellent agitation devices. a-) Would the conversion be greater if one 5 liter vessel were used as a study flow tank reactor or if the two 2.5 liter vessels were used as reactors in series? In the latter case all the feed would be send to the first reactor and the product from that would be the feed to the second reactor. b-) Would a higher conversion be obtained if the two 2.5 liter vessels were operated in parallel; that is, if 250 cm3/min of feed were fed to each reactor and then the effluent streams from each reactor joined to form final product? Assume that the density of the solutions is independent of concentrations and that operation is steady state.
Kristin asked 4 months ago

A dilute aqueous solution of acetic anhydride is to be hydrolyzed continuously at 25°C. At this temperature the rate equation for the disapperance of anhydride is -TA= 0.158CA, g mol /(cm)(min) where C is the concentration of anhydride, in gram moles per cubic centimeter. The feed rate to be treated is 500 cm?/min of solution, with an anhydride concentration of 1.5 x 104 g mol/cm². There are two 2.5 liter and one 5 liter reaction vessels available, with excellent agitation devices. a-) Would the conversion be greater if one 5 liter vessel were used as a study flow tank reactor or if the two 2.5 liter vessels were used as reactors in series? In the latter case all the feed would be send to the first reactor and the product from that would be the feed to the second reactor. b-) Would a higher conversion be obtained if the two 2.5 liter vessels were operated in parallel; that is, if 250 cm3/min of feed were fed to each reactor and then the effluent streams from each reactor joined to form final product? Assume that the density of the solutions is independent of concentrations and that operation is steady state.

A dilute aqueous solution of acetic anhydride is to be hydrolyzed continuously at 25°C. At this
temperature the rate equation

 

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