객관식
In a phase diagram for CO_2, which point represents the critical point?
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13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
객관식
At what temperature can we no longer tell the difference between the liquid and gas phases?
A
100 °C
B
200 °C
C
400 °C
D
800 °C
E
820 °C
검증된 단계별 안내1
Identify the concept of the critical point on a phase diagram, which is the temperature and pressure at which the liquid and gas phases become indistinguishable.
Examine the graph to locate the critical point, typically where the liquid-gas phase boundary ends and the properties of liquid and gas converge.
Note the temperature value at this critical point on the x-axis, as this temperature represents the point above which the liquid and gas phases cannot be distinguished.
Understand that below this temperature, distinct liquid and gas phases exist, but above it, the substance exists as a supercritical fluid with properties of both phases.
Use the temperature value at the critical point from the graph to answer the question about the temperature where the liquid and gas phases become indistinguishable.
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