Concept explainers
(a)
Interpretation:
Determine the temperature of the final mixture (Tf ) and the fraction of the liquid feed that evaporates.
Concept introduction:
The energy balance equation for the open turbine is,
Where,
(b)
Interpretation:
Explain what happens if kinetic energy is included in the part (a) calculations.
Concept introduction:
The energy balance equation for the open turbine is,
Where,
(c)
Interpretation:
Estimate the value of Pf for the given case.
Concept introduction:
The energy balance equation for the open turbine is,
Where,
(d)
Interpretation:
Plot the graphs of
Concept introduction:
The energy balance equation for the open turbine is,
Where,
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
- 3. A device is being designed to separate a natural gas having a molar analysis of 94% CH4 and 6% C2H6 into components. The device will receive natural gas at 208C, 1 atm with a volumetric flow rate of 100 m3/s. Separate streams of CH4 and C2H6 will exit, each at 208C, 1 atm. The device will operate isothermally at 208C. Ignoring kinetic and potential energy effects and assuming ideal gas behavior, determine the minimum theoretical work input required at steady state, in kW.arrow_forward= 1. A process has been proposed whereby an ideal gas is taken from P 10 bar and T = 300 K to P - 1 bar and T = 500 K in a closed system. During the process the system (ideal gas) does 1,000 kJ of work and receives 5,430 kJ of heat from the surroundings. The temperature of the surroundings is constant at 300 K. Cp Ideal gas heat capacity: = 3.6 + 0.5 * 10-³T R (c) (T in K) Calculate the change in entropy of the surroundings.arrow_forwardThe gas A(g) (1 mole) undergoes a two-step process one after another as described below :i) The gas is expanded at 25°C and from 1 bar pressure against a constant pressure of 0.2 bar and the final volume of the gas is the twice the initial volume.ii) The gas is cooled down to -25°C at constant volume.Cv,m = 3/2 RCalculate ΔU, ΔH, q and w for the each step and for the entire processarrow_forward
- 4 3 1 L € Example: An equimolar liquid mixture of benzene (B) and toluene (T) at 10 °C and 1 atm is fed continuously to a vessel at 34 mm Hg the mixture is heated to 50 °C. The liquid product is 40 mole% B, and the vapor product is 68.4 mole% B. How much heat must be transferred to the mixture per g-mole of feed? Tes00+ SE (T)- srt 21.9 bns nivis ni shutmoqmet isothio bus trinq gnillod temos a (*) 910zang 100sy most beds zuziyani 19 tolg's agoarrow_forward2.0 mol of CO2 gas (assumed to be a perfect gas with Cv,m = 28.8 JK-1mol-1) is in a cylinder with a massless piston of cross-section 100 cm2 at 10°C and 9.0 atm. The gas expands adiabatically against an external pressure of 1.5 atm until the piston moves 15 cm. Calculate (a) q; (b) w; (c) ΔU; (d) ΔT; (e) ΔS for this process.arrow_forwardalaccd sign in - Search C ||| tab s lock ▬ ▬▬ esc K- →1 V A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 39.0 cm wide and 46.8 cm high. The maximum safe pressure inside the vessel has been measured to be 6.30 MPa. O STATES OF MATTER Using the ideal equation of state For a certain reaction the vessel may contain up to 1.54 kg of carbon monoxide gas. Calculate the maximum safe operating temperature the engineer should recommend for this reaction. Write your answer in degrees Celsius. Be sure your answer has the correct number of significant digits. temperature: [] °C Explanation https://www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IvUrTNdLZh5A8CnG03PBGuXr8iCPa7ZMmym f1 X Type here to search ? A N @ Oth f2 2 Check ALEKS S # 1 * 3 W E f4 4 x10 R X f5 do % X DE 5 100 T Mc Graw HI S f6 G McGraw-Hill Education Campus X 4- 6 J 41 & Y + 7 H fg A ALEKS-Shushanik…arrow_forward
- Carbon dioxide (CO2) contained in a piston-cylinder arrangement, initially at 5 bar and 400 K, undergoes an expansion to a final temperature of 250 K, during which the pressure-volume relationship is pV1.25 = constant. Assuming the ideal gas model for the CO2, determine the final pressure, in bar, and the work and heat transfer, each in kJ/kgarrow_forwardThe molar heat capacity (Cp (T)) for iron is given by the following Shomate equation, and P,m is valid between 298-700 K, 0.012643 Cp.m (T)=| 18.42+24.64T – 8.914T² +9.665T³ - J mol K- P,m Calculate AH when heating 1 g of Fe from 200-250°C.arrow_forwardE2C.8(b) Estimate AH®(750K) for the reaction N,(g) + H,(g) → NH,(g) from the listed value of the standard enthalpy of formation of NH,(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities given in Table 2B.1.arrow_forward
- (g) Enthalpy change of a constant-pressure heating process can be calculated from heat ca- pacity as follows: AH = H(T2) – H(T1) = CpmdT %3D Determine a general expression for AH that you expect to be valid over the domain of the fitted data. (h) What is AH for the constant pressure heating of methane from 200 K to 500 K? (1) Assuming an average value of heat capacity over this tetmperature range (take the value at T= 350 K) and that beat capacity is temperature-independent, how would your answer differ from the one calculated above? That is, is a temperature-independent heat capacity a reasonable assumption (for this problem)?arrow_forwardA gas in the initial state of p1 = 75 psia and V1 = 5 ft.3 undergoes a process to p2 = 25 psia and V2 = 9.68 ft., during which the enthalpy decreases 62 BTU. The %3D specific heat at constant volume is c, = 0.754 BTU/lb.°R. Determine (a) the change of internal energy, (b) the specific heat at constant pressure, (c) the gas constant R.°arrow_forward/A piston–cylinder device initially contains volume 0.015 m3 of ethane gas at 102 kPa & 22°C. The gas reversibly and adiabatically is compressed to 6.8 bar. Determine the work done during the process and the final temperature, the final volume, take CP = 1.005 kJ/kg .K, CV = 0.718kJ/kg .K?arrow_forward
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,