Boiling above and below supercritical pressure

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Boiling at supercritical pressure differs significantly from subcritical pressure boiling. At subcritical pressures, a saturated liquid can vaporize into a saturated vapor without a temperature increase, which defines the boiling process. In contrast, at supercritical pressures, the concept of boiling does not apply as there is no distinct phase change; instead, adding energy leads to an increase in temperature and density within a single-phase region. The critical point marks the boundary where these behaviors change, indicating that boiling as traditionally understood cannot occur above this pressure. Understanding these differences is crucial for applications involving supercritical fluids.
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Homework Statement



How does the boiling process at supercritical pressure differ from the boiling process at subcritical pressure?

Homework Equations



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The Attempt at a Solution



I know that the critical point is the point on a P-v diagram where the saturated liquid and saturated vapor curves meet.

At subcritical pressures, we could have a saturated liquid where the addition of energy would cause some of the liquid to vaporize into a saturated vapor without an increase in temperature. This is boiling.

Can boiling even occur at supercritical pressures? I didn't think this was possible.
 
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I thought that at supercritical pressures, adding energy would cause a single-phase region to expand and become more dense and the temperature would increase. Is this correct? Any additional information would be appreciated. Thanks!
 
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