7: Gases
- Page ID
- 371347
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- 7.1: Characteristics of gases
- Four parameters, i.e., amount, volume, temperature, and pressure that define the properties of any gas are explained. Measurement of gas pressure, blood pressure, and the kinetic molecular theory of gas are explained.
- 7.2: The pressure-volume relationship
- Boyle's law is described, i.e., the volume of a given amount of gas varies in inverse proportion to the pressure of the gas at a constant temperature. The breathing process, i.e., inhalation and exhalation are explained based on the pressure-volume relationship of the gases.
- 7.3: The temperature-volume relationship
- Charles's law, i.e., the volume of a given amount of gas is directly proportional to absolute temperature at constant pressure is described.
- 7.4: The pressure-temperature relationship
- Gay-Lussac’s law, i.e., the pressure of a gas is directly proportional to the temperature in the Kelvin scale provided the volume and amount of gas is not changed, is described.
- 7.5: The combined gas law
- Combined gas law, i.e., the relationship between pressure, volume, and temperature of a given amount of gas are described.
- 7.6: The volume-amount relationship
- Avogadro’s law, i.e., the volume of a gas is directly proportional to the amount of gas in moles provided the temperature and pressure of the gas are not changed is described.
- 7.7: Ideal gas law
- Combined relationships between all four parameters that together define the properties of gases, i.e., volume, temperature, pressure, and amount of gas are described with examples. The molar volume of an ideal gas at standard temperature and pressure is described and compared with the molar volume of real gases.
- 7.8: Dalton’s law of partial pressure
- Dalton’s law of partial pressure, i.e., “the total pressure of a mixture of gases equals the sum of the pressure that each component gas in the mixture would exert if it was present alone” is described. The hyperbaric chamber used for some medical treatments is also described.