1) You are running a manufacturing process where a mole fraction of 0.40 species
ID: 961236 • Letter: 1
Question
1) You are running a manufacturing process where a mole fraction of 0.40 species in a
binary mixture of 1 and 2 is required at a flow rate of 5 mol/s and a temperature of 300K. This is
achieved by mixing pure streams of 1 and 2. The stream of pure2 flows into the mixer at a
temperature of 300K. The molar enthalpy of mixing of species 1 and 2 is given by
Hmix,m=833x1x2 J/mol
Heat capacity data as follows; Cp,1,m=50J/(mol K), Cp,2,m=70 J/(mol K)
Assuming an adiabatic mixing process, what is the inlet temperature required for stream 1 to
achieve the desired outlet stream temperature.
2. What is the maximum number of phases you can have at equilibriu
Explanation / Answer
Given adiabatic process,
=> Initial energy = Final energy
Hmix,m=833x1x2 J/mol
x1=0.4,
=>Hmix,m= 199.92 J/mol
Q = 0
=> 199.92J/mol - 5mol/s*0.4*50J/(mol K) * (300-T) -5mol/s*0.6*70J/(mol K) * (300-300) =0
T = 298K
2) Maximum no. of phases, P = 2+N-F
N = no of components,
F = degrees of freedom
For max P, let F=0;
No of components = 2
=> Max no of phases = 4
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.