kaplan practice test 6 phys science q 36

[2010premed]

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At 3.5 atm and 106 C which process for compound a has the most negative change in G?

A. Sublimation
B. Vaporization
C. Condensation
D. Deposition

at 3.5 atm and 106 C, A is a liquid, so A and D are eliminated. However, I thought that the gas phase is the most "disordered" so shouldn't going from liq to gas have a + change in s and a negative change in H?

 

[Rabolisk]

Going from liquid to a gas is a positive change in H.

 

[fizzgig]

i think the point is that at 3.5atm and 106C, it is a liquid. the state it wants to be in if you put these conditions to it is liquid. if it is in any other state at the time you apply these conditions, it will become a liquid. condensation is the process that will bring it to the state it wants to be in.

 

[2010premed]

Thanks guys!