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Problem 12.11: The laboratory division of your company has sent you the following data for the system n-pentane (1) propionaldehyde (2) at 35 °C: The activity coefficients of the two components at infinite dilution are 4.0 and the saturation pressures of the pure components are 0.7 and 1 bar, respectively. a) Does this system exhibit positive, negative, or no deviations from ideal-solution behavior? b) Assuming the validity of the Margules equation, determine the constants A12 and A21 . c) You suspect that this system forms an azeotrope. What is the composition of the two phases and the pressure at the azeotrope? d) Draw a qualitative Pxy graph at 35 °C. On the graph show all the information that you have for this system. e) Your are designing a single flash separation process for a stream that contains 45% n-pentane (the rest is propionaldehyde). The mixture is to be flashed at 35 °C and you must determine the pressure so that the purity of n-pentane is 95%. What is this pressure?
A geometrically similar 200 pump having a similar efficiency curve is used to pump water through 112.5 m of 150 mm pipe, f = 0.025. The static lift is 10 m. Neglecting minor losses in the pipe calculate the flow, head and power required to drive t..
Do the following groups fit the definition of a profession? Discuss how they do or do not
How do you write a report about conductometric titration
Given a population of 50,000 susceptibles, 10 infectives, and 0 immunes, and b = :001 and g = 0:8, simulate an epidemic using the Kermack- McKendrick model.
questiona personal protective equipment are only used when it has proven impractical to control occupational hazards by
Risk Analysis and Management: Fragility versus Loads and Fire Explosion Safety Issues, 1. A propane tank is located 100 m away from the nearest buildings. The fragility to explosion can be expressed by
Two equilibrium stages at 25C are used as shown in the following diagram. If 300 kg H2O/h is fed to each extraction unit, what fraction of the acetone in the feed solution would be removed and what would be the composition of the combined extract?
Handling operations for solid/powder substances are often a source of dust generation and are a source of exposure to hazardous substances in industries. Describe in details the measures that can be taken to prevent exposure during the following s..
Table: contains six-month average price data for styrene and its feedstock's ethylene and benzene for South Korea over the period Jan. 1999 to Dec. 2010. Calculate the gross margin
What thickness of insulation should be used
The motor starting torque.
Find the components of the convective momentum flux pvv inside and outside the slot - Evaluate the xx-component of pvv.
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