1 mole of a hydrocarbon fuel and 2 moles of air (both at same initial temperature T=25C" and Cp=J/kg.K) represent diffusion flame, if the ratio of the summation of passive scalar in initial fuel side to ovygen side is 100, the heat of combustion is give as... 2.48 MJ 3.25 MJ 5.25 MJ O 1.25 MJ O Other O

1 mole of a hydrocarbon fuel and 2 moles of air (both at same initial temperature T=25C" and Cp=J/kg.K) represent diffusion flame, if the ratio of the summation of passive scalar in initial fuel side to ovygen side is 100, the heat of combustion is give as... 2.48 MJ 3.25 MJ 5.25 MJ O 1.25 MJ O Other O

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter2: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 2.32E: Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special...

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Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special cart to move them around. An80.0-Ltank ofnitrogen gas pressurized to 172 atm is left in the sun and heats from its normal temperature of 20.0C to 140.0C. Determine a the final pressureinsidethe tank and b the work, heat, and U of the process. Assume that behavior is ideal and the heatcapacity of diatomic nitrogenis 21.0J/mol.K.
10. A gas of R= 219 J undergo a process and results in these changes: AH = kgm-K 2190 KJ and AU = 1458 KJ. For 1.8 kgm, determine (a) Cy, C, and k. (b) AT and (c) WNF and Wsp. %3D
2.) Two bodies A and B with constant total heat capacities Cen and Cpe and chfferent imitial tom pevatu res Tao heat witu each other wncer is bleeric and TB, exchange condiitions. No heat is trausfered to or from the Surran dings and the tomp. 6f both bodies are assured Uniform at all times aud the process is ireversible. a) Derive an expression for dhe total entropy chauge of the finotion of temp. tuo losdies as a 6) what is The eguililoviuus temp. of the systeen?
The constant heat capacity of perpect with temperature according to the expression a a cample of ZAMOOTMA prers ure fren of punad SOM pound CP / (J K-') gas 2 20.17 0.34 68 CT7K). calculare qi Wi AU and AH when temperature iš raised prom to 100 °C, Ci) at constant ol sig oldenieoh oe 25°0 pressure, (i) dt constant voume.
The molar heat capacity (Cp.m (T)) for N2 is given by, ´P,m Cp m (T)=(27.0+5.9×10T – 0.34×10 *T² )J mol¯ K' P,m Calculate AH when heating 1 mol of N2 from 25-125°C.
Given these relation, prove this without usin Maxwell relatios as - ( ), aV ӘT JP/T P
The molar heat capacity (C. (T)) for iron is given by the following Shomate equation, and 3. P,m is valid between 298-700 K, 0.012643 C (T)=|18.42+24.647 – 8.9147² +9 +9.6657³. J mol K Calculate AH when heating 1 g of Fe from 200-250°C.
The 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.
2. When a sample of 1.0 mol of a monatomic perfect gas with Cm- 12.47 J/mol K and initially at 25°C, doubles it yolume adiabatically its temperature decreases to -60°C. State whether the process is rexersible or not. Why?
4. Determine the values of AHsys, ASys, ASsurr, and ASiot when a 1.75 mol sample of superheated benzene vaporizes at 365.0 K and 1 bar. Assume the temperature of the surroundings stays constant at 365.0 K. Relevant benzene data: CPm.lig=135.7 J-mol--K-; CP.m.gas 108.8 J-mol ''K'; Tvop = 353.3 K at 1 bar; AHvap = 30.72 kJ/mol at 353.3 K and 1 bar. Assume the heat capacities are constant over the relevant temperature ranges. %3D %3D
A 25.0 g mass of ice [H2O (s)] at 273 K is added to 150.0 g of H20 (I) at 360 K at constant pressure. The molar heat capacities at constant pressure are given by Cp.m[H2O (I)] = 75.3 JK-'mol and Cp.m[H2O (s)] = 37.7J K--mol-1, and molar heat of fusion (AHfus) = 6.010kJmol-1 at 273 K. a) State the final state of the system; i.e. ice OR liquid water. Explain your answer. b) Calculate the final temperature (T) (in unit K) for the system. c) Calculate the change in entropy (AS) for the process. State if the process is spontaneous.
Qui Air in a closed piston-cylinder arrangement is expanded from the initial pressure of 8.3 bar and initial volume of O.029 m to the final state of p2 2.2 bar. A polytropic relation of pV13 = constant was followed between pressure and volume for the process. The specific internal energy at the initial and final states are 156.5 and 101.5 kJ/kg, respectively. The mass of the air is 0.28 kg. Neglecting the effect of kinetic and potential energy, determine the heat transfer, inkJ.