Chem Ch.9

  1. Once equilibrium is reached between a vapor and a liquid, what does this mean for the pressure exerted by the vapor over the liquid?
    It remains constant
  2. What is the pressure of vapor in equilibrium with a liquid called?
    Vapor Pressure
  3. If both liquid and vapor are present, will the pressure exerted by the vapor be dependent on the container's volume?
  4. State the Clausius-Clapeyron equation
    ln(P2 / P1) = (deltaHvap / R)*[(1/T1) - (1/T2)]
  5. Scientifically; when does a liquid boil?
    When it reaches a temperature where its internal vapor pressure is equal to the pressure above its surface.
  6. What is the critical temperature?
    This is the temperature value above which the liquid phase of a substance cannot exist
  7. What is critical pressure?
    This is simply the vapor pressure of a liquid at its critical temperature.
  8. What is a supercritical fluid?
    This a substance above its critical temperature and pressure.
  9. What is the triple point of a substance?
    This is the temperature and pressure at which all three phases of a substance are in equilibrium.
  10. What is sublimation?
    The process by which a solid changes directly to a vapor.
  11. At what temperatures can a solid sublime?
    Only temperatures below the substance's triple point.
Card Set
Chem Ch.9
Chemistry Chapter 9 on states of substances and intermolecular forces