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Problem 1: 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 solution containing 30 wt. benzene b 45 wt. toluene t and 25 wt. xylene x is fed into a distillation process as
at atmospheric pressure ethyl acetate and ethyl alcohol form an azeotropic mixture containing 53.9 mole of ethyl
QUESTION 11 - Steam boiler plant in a petroleum refinery has an overall thermal efficiency on gross C.V . of the fuel of 85 % and an out put of 90720 kg of steam per hour. The steam is produced at a pressure ..
A typical feed stream composition is 55% ethylene, 5% inserts, and 40% water. A typical product stream is 52.26% ethylene, 5.49% ethanol, 0.16% ether, 36.81% water, and 5.28% inserts. Calculate the selectivity of ethylene for ethanol and for ether..
Calculate the magnitude of the electric field at the ball's location due to the charged wall, and state its direction relative to the coordinate axes shown.
Natural gas composed of 60. mol% methane, 30. mol% ethane, and 10. mol% propane at 25 °C and 500. psia is fed at a rate of 50. m3/hr into a boiler. In the boiler it is blended with enough air to provide 20% excess oxygen and combusted.
We have a mixture consistingof 90 mole% 'A' (45 mol/lit) and 10 mole%impurity 'B'(5 mol/lit). To be satisfactory quality the ratio of 'A' to 'B' in the mixture must be 100 to 1or higher.
The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point temperature of the stack gas.
n-Pentane is burned with excess air in a continuous combustion chamber. Calculate the percent excess air fed to the reactor and the fractional conversion of pentane.
question 1a discuss in details on five types of health effects related to exposure to hazardous substances encountered
Calculate the specific heat capacity and the molar heat capacity of mercury.
A value of mass transfer coefficient kg = 0.0150 kg /m2-s . it was also found that the corresponding heat transfer co efficient = hc = 15 j /m2-s
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