Pressure And General Gas Law (Boyle’s Law And Charles’s Law)

  • Boyle’s Law
  • Charles’ Law
  • Pressure Law
  • General gas Law

In the attempt to understand the behaviour of gases in relation to temperature, volume and pressure. The following variables are examined.

  • variations in volume due to the pressure and temperature Boyle’s law
  • Variation of volume in relation to the temperature, pressure and temperature.
    Charles law
  • Variation in pressure with temperature at the same volume Pressure law

Boyle’s Law

Boyle’s law says that the pressure of a certain mass of gas changes inversely with the volume temperature.


Charles’ Law

Charles law stipulates that for a fixed gas mass that is pressure constant, its quantity is proportional to the temperature at which it is absolute


Pressure Law

The law of pressure states that pressure for a certain gas mass at a an unvarying volume is proportional temperature absolute.


Absolute Zero of Temperature

In the event that the volumes of pressure, temperature or pressure-temperature are extrapolated backwards, they cut the temperature axis around -273 zeroC. This temperature is referred to as absolute zero. It is the point at where the volume of gas is thought to be zero as it is cooling. At that temperature, the gas molecules stop moving completely. The temperature of this is an presumption, since gas molecules are known to melt most of the time prior to the temperature being attained.

General gas Law

The gas law generalized is the result of the Boyle’s law, Charles Law, and Pressure Law.



  1. Make these laws lawful and draw its mathematical expression
  2. Charles’ law
  3. Boyle’s law
  4. An empty vessel has been filled up with a gas with a temperature of 50 °C and an atmospheric pressure of 76cmHg. Calculate the pressure at which the vessel will be finished when the volume of gas doubles when the temperature is increased to zeroC



  1. It is the equation V xthe equation P xVZ = constant follows Boyle’s Law if (a) (a) x=0 Z=1 (b) 1x=1 (b) x=1, y=0, and the z value is zero. (c) the x=1, y=1 Z=0 (d) 1 = x, 1 = y Z=1 (e) (e) x=1, y=1 and z=-1.
  2. The air in a column that is 10cm long is trapped inside an insulated tube at zeroC. Which is the longest tube at 100 C?C? (a) 12.4cm (b) 13.7cm (c) 18.5cm (d) 37.0cm (e) 100cm
  3. The volume of a specific quantity that is gas in 27 zeroC will be 1200cm 3. Calculate the quantity at 127 zeroC in the event that the pressure remains constant. (a) 300cm3 (b) 400cm3 (c) 1000cm3 (d) 1600cm3 (e) 250cm3
  4. A solid mass of gas that is 600cm in volume 3. at 27 0C is chilled at constant pressure until it reaches the temperature of 0.C. What is the difference in volume? (a) 54cm3 (b) 273cm3 (c) 300cm3 (d) 546cm3 (e) 600cm3
  5. A gas mass occupies 20 cm 3. when 5 5C as well as 760mmHg of pressure. What is the volume of it at 30 to 0C at 800mmHg? (a) 41.4cm3 (b) 20.7cm3 (c) 50cm3 (d) 0.4cm3 (e) 25cm3


  1. (a) Declarate the ideal gas equation. (b) Make graphs in order to illustrate Boyle’s law and Charles law.
  2. (a) What does it mean by absolute zero temperature? (b) Explain the foundational assumptions of the kinetic molecular theory of gasses.

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