Real Gases: Deviation from Ideal Behavior Quiz
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Questions and Answers

What factor plays a significant role in the behavior of real gases at high pressure or near the condensation point?

  • Atomic weight
  • Atomicity
  • Intermolecular forces (correct)
  • Molar mass
  • Which type of gas is termed non-ideal or real gases?

  • Noble gases
  • H2, N2, and CO2 (correct)
  • Alkali metals
  • Halogens
  • What must be taken into account to understand the behavior of real gases?

  • Variable specific heat capacity (correct)
  • Elementary reactions with constant composition
  • Molecular dissociation only
  • Characterization of ideal gas behavior
  • What theory assumes that as pressure increases, the volume of a gas becomes very small but not zero?

    <p>Ideal gas law theory</p> Signup and view all the answers

    Which of the following is NOT an origin of real gas behavior?

    <p>Molecules can be compressed to zero</p> Signup and view all the answers

    What characteristic differentiates real gases from ideal gases in terms of behavior?

    <p>Compressibility effects</p> Signup and view all the answers

    Which equation is generally superior in predicting the liquid densities of many non-polar materials?

    <p>Peng-Robinson equation</p> Signup and view all the answers

    What is the parameter that the model should provide reasonable accuracy for near the critical point?

    <p>Acentric factor</p> Signup and view all the answers

    What mixing rule should not employ more than a single binary interaction parameter according to the text?

    <p>Peng-Robinson equation</p> Signup and view all the answers

    What is the formula for the acentric factor 𝜔 mentioned in the text?

    <p>$1 + 0.37464 + 1.54226𝜔 − 0.26992𝜔^2 1 − 𝑇𝑟^{0.5}$</p> Signup and view all the answers

    What should the parameters be expressible in terms of, as per the text?

    <p>Compressibility factor and liquid density</p> Signup and view all the answers

    Which equation is applicable to all calculations of all fluid properties in natural gas processes?

    <p>Peng-Robinson equation</p> Signup and view all the answers

    What is the critical temperature of a gas?

    <p>The temperature at which the gas cannot be liquefied no matter how great the pressure applied</p> Signup and view all the answers

    What phenomenon is observed when gas molecules coalesce to form a liquid?

    <p>Liquefaction</p> Signup and view all the answers

    Which of the following equations is used to describe the behavior of real gases?

    <p>van der Waals Equation</p> Signup and view all the answers

    What is the significance of the critical temperature in the liquefaction of gases?

    <p>It indicates the temperature below which liquefaction is possible</p> Signup and view all the answers

    Which factor characterizes the non-ideality of real gases?

    <p>Acentric factor</p> Signup and view all the answers

    Which equation considers both volume and attractive forces between gas molecules?

    <p>Van der Waals equation</p> Signup and view all the answers

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