Charle's Law

• Charles law


  Describes the relationship between the volume and temperature of a gas
• Gas physical behavior


  • Described by 4 variables: pressure, volume, temperature, and amount/mole
• Charles law was formulated by Jacques Charles


  1800
• Charles law experiment


  1. Prepared test tube with trapped air under mercury plug

  2. Immersed in water with heating coil and cooled with ice

  3. Changed temperature and observed volume changes
• Volume and temperature of gas

  Directly proportional
• Mathematical expression of Charles law

  • Volume is directly proportional to temperature
  • Volume/temperature = constant
• Theoretically, gas occupies zero volume at absolute zero temperature (-273.15°C)</b>
• Temperature unit is Kelvin (K) or Rankine (°R) for English unit