Please do both since they go together, show all work and explain, thank you. 1.1

Question

Please do both since they go together, show all work and explain, thank you.

1.1 have a liquid A which has some partial pressure when in the pure state. I then added liquid B and, after equilibration, the partial pressure of A has not changed (no B vapor is detected). Did the liquids mix? (3 pts) 2. I don?t mean to be dense, or maybe I do, but in question 1 what would be a good physical reason for the fact that you can?t detect the partial pressure of liquid B given that the partial pressure of A is unchanged? (3 pts)

Explanation / Answer

1.
I have a liquid A which has some patial pressure when in the pure state.
I then added liquid B and after equilibration, the partial pressure of A
has not changed(no B vapor is detected).
Did the liquids mix?

Answer:
No, the liquids dont mix. If they mix then the concentration or mole fraction

of A will change and this will change the partial pressure of A. But the

constant vapor pressure of A, indicates that mole fraction has not changed.
So, the liquids dont mix.

2.
I dont mean to be dense, or maybe I do, but in question 1 what would be
a good physical reason for the fact that you cannt detect the partial
pressure of liquid B given that the partial pressure of A is unchanged?
Answer:
No B vapor is detected. So B is nonvolatile. There are no vapors of B.
So partial pressure of B vapor is zero.

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