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Problem 14.13: Acetaldehyde can be produced from the dehydrogenation of ethanol according to the following reaction: CH3 CH2 OH(g) = CH3 CHO(g) + H2 (g). Additional data. The ideal-gas heat capacities of the pure species in this reaction are: ethanol: 118 J/mole K; acetaldehyde: 90 J/mole K; hydrogen: 30 J/mole K. a) Calculate the equilibrium constant at 25 °C. b) Calculate the heat of reaction at 25 °C. Is the reaction exothermic or endothermic? c) Assuming that the heat of reaction does not change much with temperature, calculate the equilibrium constant at 550 °C. d) Is it an acceptable assumption that the heat of reaction does not change much with temperature? (Answers without justification do not count.) e) The reactor initially contains one mole of ethanol and nothing else. The reaction is run at 550 °C and 2 bar until equilibrium is reached. What is the mole fraction of species at equilibrium? f) It is desirable to react 98% of the initial amount of ethanol. If the temperature is to remain at 550 °C, at what pressure should you run the reaction?
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
Strontium fluoride, SrF2, has a Kspvalue in water of 2.45 × 10-9at room temperature. Calculate the solubility of SrF2in water. Express your answer in units of molarity.
Ethane (C2H6) can be dehydrogenated to ethylene (C2H4), which can be dehydrogenated further to acetylene (C2H2). A reactor is fed with ethane and steam at a 1:1 mole ratio (The steam simply acts as a diluent). If the reactor runs at 1 atm and the rea..
The enthalpy change of reaction for the balanced equation (with lowest whole-number coefficients) is H 67.7 kJ. If 2.50 102 mL of N2(g) at 100.C and 3.50 atm and 4.50 102 mL of O2(g) at 100.C and 3.50 atm are mixed, what amount of heat is..
What's an appropriate rule of thumb for dealing with "magic numbers" (empirical parameters) in the development of an image analysis algorithm?
The Soave-Redlich-Kwong equation is a commonly used cubic equation of state, second in popularity only to the Peng-Robinson Equation of state. In this problem, just derive the two equations (7.66) given in the problem.
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 reactor is jacketed by water at a temperature of 200C. The overall heat transfer coefficient has been estimated at 300 J/(m2.s.K), while the heat transfer area is 0.75 m2. Mixing is ensured through an agitator, which contributes a work of 12 KW..
To be satisfactory quality the ratio of 'A' to 'B' in the mixture must be 100 to 1or higher. 'D' reacts with both 'A' and 'B' as follows;A + D?R-rA= 21 CACDB + D?S-rB= 147 CBCDAssuming that the reaction go to completion, how much 'D' need be added..
question 1 a using appropriate data sources to be cited correctly make a reasonably accurate sketch or graph of a
In a wood chemistry/wood physics lab, we were asked to place a piece of wood that contained approx. 64% moisture content in a hydraulic press where we applied a constant 400 psi pressure and applied a constant 400 degrees F of heat. We inserted a ..
A fermentation reactor is charged with a sterile feed of growth media at 35 °C and inoculated with a batch of microorganisms. The batch is allowed to grow for 10 days. During the growth period the temperature is maintained at 37 °C by circulating ..
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