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Category > Computer Science Posted 27 Jul 2017 My Price 12.00

binary mixture of species

7.54    3Consider a binary mixture of species a and species b at 300 K and 1 bar. The vapor pressure of pure a at 300 K is 80 kPa. A plot of the activity coefficient of species a vs. mole fraction of species a is shown below. Based on this plot,

(a)     Specify the reference state for species a (Lewis-Randall or Henry’s). Explain.

(b)     What is the value of fa?

(c)     What is the value of Ha?

(d)    As best as you can, come up with the Margules parameter A in the two-suffix Margules equation

gE 5 Axaxb

(e)     Consider a liquid mixture of 2 moles of a and 3 moles of b at 300 K and 1 bar. At equilibrium, what is the mole fraction of a in the vapor phase, ya?

(f)      For the mixture above, determine gb based on a Lewis/Randall reference state.

 

 

3

2.75

2.5

2.25

2

Text Box: In ga1.75

1.5

1.25

1

0.75

0.5

0.25

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 

Activity coefficient of species a

0      0.1     0.2    0.3    0.4     0.5

xa

 

0.6    0.7    0.8     0.9      1

 

 

Answers

Maurice Tutor
(5)
Status NEW Posted 27 Jul 2017 08:07 PM My Price 12.00

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