- #1
Qube
Gold Member
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Homework Statement
https://scontent-b-dfw.xx.fbcdn.net/hphotos-prn1/v/1012733_10201076259690370_236735593_n.jpg?oh=4896ca67a34d3b223b764aba8ed308ab&oe=528A1B57
Homework Equations
http://upload.wikimedia.org/wikipedia/commons/3/34/Phase-diag2.svg
The Attempt at a Solution
Not sure entirely what's going on here.
A) Triple point. Where the three states of matter exist in equilibrium.
B) Critical point. Where the distinction between liquid and gas ends. No more condensation or evaporation past this point. A supercritical fluid exists beyond this point.
C) Looks like a point within the solid region of the phase diagram.
These don't correspond with any answers. Boiling and melting points lie ON the 760 torr/1 atm dotted line, right? So it looks like there is no correct answer?!
ETA:
This seems to be a common "problem." Consider this follow up problem - er - what is this e to f line? Is there some convention I am missing - that there is always an implied e to f line?
https://scontent-b-dfw.xx.fbcdn.net/hphotos-frc1/v/576634_10201076272730696_868146875_n.jpg?oh=623c0ebd9b4868a62578d975129c85d3&oe=528A98A4
Also please consider this other problem in which there appear to be invisible points: https://scontent-b-dfw.xx.fbcdn.net/hphotos-prn1/v/941858_10201076233729721_1666715440_n.jpg?oh=8f6cf59215279e3607fd06eb999ebedf&oe=528A8A74
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