Gas Laws

Show/Hide Page Index


Gas Laws explain the behavior of an ideal gas in terms of temperature, pressure, volume.
The following are the some of the important gas laws:

  • Boyle’s Law
  • Charles Law
  • Gay-Lussac’s Law
  • Avogadro’s law
  • Universal Gas Law

Gas laws : Boyles, Charles and Gay-Lussacs law

Boyle’s Law:

Boyle’s law states that the volume of a given mass of gas (V) is inversely proportional to its absolute pressure (P), provided the temperature of the gas (T) remains constant.

Boyle’s law formula
boyles law formula

Charles Law:

According to Charles law, the volume of a given mass of gas (V) is directly proportional to its absolute temperature (T), when its pressure remains constant.

Charles law formula
charles law formula

Gay-Lussac’s Law:

Gay-Lussac’s Law is also know as Amontons’ law. It states that if the volume of a given mass of a gas (V) is kept constant, then the pressure of the gas (P) is directly proportional to its absolute temperature (T).

Gay-Lussac’s Law Formula
gay lussacs law formula

Avogadro’s Law:

Avogadro’s law states that equal volumes of different perfect gases, at the same temperature (T) and pressure (P), contain equal number of molecules (n).

Avogadro’s law equation
avogadros law formula

Universal Gas Law:

Combined Gas law is derived from the three gas laws Boyles law, Charles law and Gay-Lussacs law.

Universal Gas Law Formula
universal gas law formula

Spread the Knowledge

'ME Mechanical' is an online portal for mechanical engineers and engineering students. Published hundreds of articles on various engineering topics. Visit our about section to know more.

All Comments

  • i really appreciate ur ability

    Bello Musa Apr 15, 2017 1:55 pm Reply

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.