Question

Pressure [Pa] QUESTION 5 Sav Which line represents a process for which PVaconstant? 12 10 A 6 2 0 0 1 2 3 5 Volume [m3] ANSWI hmit to sme and submit. Click Save All Answers to save all ansuers parenthesis. 1. An insulated piston-cylinder device initially contains 10kg of saturated liquid water at 20°C. An electrical resistor embedded in the wall is turned on until the volume of the water triples, but its pressure remains constant. The piston moves smoothly; kinetic and potential effects are negligible. Determine i. (3) the final volume of the water, ii. (2) the final temperature of the water, ii. (5) the work done by the water. Equilibrium Reaction (WGS) A WGS reactor works at 600K and the feed consists of 36% CO, 30 % CO2 20% steam, and 14% hydrogen. Water Gas Shift -CO (g)+ H2O (g) CO2 (g) 42 kJ/mol (Exo) H2 (g) Compute the conversion of the reaction + Pco2 PH2 Kp Py2o Pco nco2 nH2 Kp nH20 nco (nco2 +X)(nH2 + X) p (1H20-X) (nco- X) 33010 K, = 0.0265e 8.314 T(K) Soving for X, X- 16.4 With respect to the limiting reactant, H20, the conversion is 16.4/20 =0.82 Chapter-5. Syngas_2016_Industrial-Chemical-Process-Analysis-and-Design.pdf CHE 5384 Petrochemical Processes /Smithl n 2. AWGS reactor works at 650K and the feed consists of 30% CO , 30 % CO2, 20% steam, and 15% hydrogen. Compute the conversion of the reaction. Plot the profile of the conversion with the temperature

Answer 1

Answering the question 2

1)

as in the given question the water is heated until the volume becomes thrice of initial volume

the density of the water at 20 degree celcius is 1000 Kg per meter cube hence the volume of 10 Kg water is 0.01 m³ and the final volume of the water after heating is 0.03 m³

2)

using the relation

V1 Tr Ti

T₂ = 879 K

3)

assuming the pressure in the piston is atmospheric pressure 101325 Pa

work done by the system is

W=101325*0.02

W = 2026.5 J

explanation of the first graph

during process A the process is constant pressure process which is known as isobaric process

during process B the cooling of the system is going on by keeping volume constant hence pressure is decreasing with cooling or heat removal process this process is called isochoric process

during process both the variable (Volume and pressure ) are changing work id doing on the system