Properties of gases

Cards (19)

  • Diffusion
    High concentration to low concentration
  • Properties of Gases

    • Temperature in Kelvin (K)
    • Pressure in Pa
    • Volume in m³
  • 0°C = 273K
  • Experiment to measure pressure
    Barometer
  • Boyle's Law
    At constant temp, vol of fixed mass of gas is inversely proportional to its pressure
  • Charles' Law
    Fixed mass of gas at constant pressure is directly proportional to the temp
  • Brownian movement
    • Constant, random, straight line of particles
  • Avogadro's Law

    Same no. of particles in 1L of any gas at STP (22.4L)
  • 1L of gas at RTP = 24.4L
  • Ideal Gas Equation
    PV = nRT
  • Real Gases

    • Differ from ideal gases due to contradictions
    • Most like ideal at high temp and pressure
  • Assumptions of Kinetic Theory of Gases

    • Continuous rapid random movement
    • No attractive or repulsive forces
    • Volume is negligible
    • Collisions are perfectly elastic
  • No such gas exists that obeys all assumptions of kinetic theory
  • Ideal Gas
    Obeys all assumptions of kinetic theory under all temp and pressure
  • General Gas Law
    PV/T = constant
  • Gay-Lussac's Law of Combining Volumes

    Ratio of small whole numbers
  • If you know the mass of a thing, you can find the moles of anything
  • Contradictions: There may be attractive forces when particles move close together
  • Inversely proportional: as one increases the other decreases.