Can All Solids Be Liquefied by Increasing Pressure?

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SUMMARY

Not all solid substances can be liquefied by simply increasing pressure. In the discussion, it is established that ice (H2O), dry ice (CO2), and sulfur (S) can be liquefied under sufficient pressure, while diamond (C) and graphite (C) cannot. Additionally, nitrogen (N2), helium (He), hydrogen (H2), water (H2O), and carbon dioxide (CO2) cannot be liquefied at 1 atm pressure. Understanding phase diagrams is crucial for analyzing the phase transitions of these substances.

PREREQUISITES
  • Basic understanding of phase diagrams
  • Knowledge of solid, liquid, and gas states of matter
  • Familiarity with the properties of substances like water, carbon dioxide, and nitrogen
  • Understanding of pressure-temperature relationships in phase changes
NEXT STEPS
  • Study the phase diagram of water for insights on phase transitions
  • Research the liquefaction processes of carbon dioxide and sulfur under pressure
  • Explore the effects of pressure on the states of nitrogen and helium
  • Investigate the thermodynamic principles governing phase changes
USEFUL FOR

Chemistry students, physicists, and anyone interested in material science and phase transitions will benefit from this discussion.

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Homework Statement



Which of the following solid substances can be liquefied simply by increasing the pressure suffciently?
ice (H2O)
diamond (C)
dry ice (CO2)
sulfur (S)
graphite (C)

Which of the following substances cannot be liquified at 1 atm pressure?
nitrogen (N2)
helium (He)
hydrogen (H2)
water (H2O)
carbon dioxide (CO2)

Homework Equations





The Attempt at a Solution


I know that some of them are solids, liquids and gases in standard state but I don't know which can be liquified etc. help?
 
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