Practice question · Select all that apply
Which statements about the critical point are correct?
Hints
- Three describe what happens at the critical point; one gets the latent heat backwards.
- If the two phases become identical, what must the latent heat be?
Show the answer
- B. The distinction between liquid and gas disappears there
- C. It terminates the liquid-vapour coexistence line
- D. Different substances share the same critical exponents
Why
At the critical point the two phases become indistinguishable, so the coexistence line ends and the latent heat falls to zero, not a maximum. The universality of critical exponents is one of the deepest results in the subject.
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