11.14 (1)

11.14 (1) - At the critical point the fluid can no longer...

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Key: 14. The critical point of a substance is the point at which… a. the substance can exist as a solid, liquid, or gas b. the pressure in torr and temperature in ˚Celsius are equal to each other c. a crystal solid becomes an amorphous solid d. molecular forces are strong enough to cause the substance to undergo sublimation e. the substance doesn’t have separate gas and liquid phases f. it explodes with the power of 100 atomic bombs.
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Unformatted text preview: At the critical point, the fluid can no longer be distinguished as a liquid or a gas, so answer e is correct. This is different from a point on the line separating the gas and liquid phase on the phase diagram where the substance can be either gas or liquid. At the critical point it is a combination of both. This generally occurs when the pressure and temperature are both high as seen in the following phase diagram....
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