Vapor pressure of a liquid homework

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SUMMARY

The vapor pressure of a liquid at 25 degrees Celsius is 200 torr. When the pressure is lowered to 190 torr, the liquid will evaporate. This conclusion is based on the understanding that a decrease in external pressure allows the liquid molecules to escape into the vapor phase, thus facilitating evaporation. The discussion emphasizes the distinction between evaporation and boiling, noting that evaporation occurs under isobaric conditions.

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  • Understanding of vapor pressure concepts
  • Knowledge of phase changes in liquids
  • Familiarity with thermodynamic principles
  • Basic grasp of pressure and its effects on liquids
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  • Study the relationship between vapor pressure and temperature
  • Learn about the Clausius-Clapeyron equation
  • Explore the concept of boiling point under varying atmospheric pressures
  • Investigate the effects of vacuum on liquid phase transitions
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[SOLVED] vapor pressure

Homework Statement



the vapor pressure of a liquid at 25 degrees celsius is 200 torr. If the pressure over the liquid is lowered to 190 torr at 25 degrees celsius the liquid will...

a)evaporate
b)boil
c)freeze

Homework Equations





The Attempt at a Solution



ok, so i think it would evaporate since the vapor pressure would decrease and therefore the decrease in pressure holding the liquid together would allow evaporation to take place. Can someone tell me if my reasoning is correct?
 
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You are close but consider that evaporation is usually applied to liquids under isobaric conditions. What happens to a liquid when you subject it to a slight vacuum (or slightly lower)?
 

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