vogadro's law (sometimes referred to as Avogadro's hypothesis or
Avogadro's principle) is a gas law named after Amedeo Avogadro who, in 1811,
hypothesized that two given samples of an ideal gas, at the same temperature,
pressure and volume, contain the same number of molecules.
(sometimes referred to as Avogadro's hypothesis or Avogadro's principle) is a
gas law named after Amedeo Avogadro who, in 1811, hypothesized that two
given samples of an ideal gas, at the same temperature, pressure and volume,
contain the same number of molecules. Thus, the number of molecules or atoms in
a specific volume of gas is independent of their size or the molar mass of the
As an example, equal volumes of molecular hydrogen and nitrogen contain the same
number of molecules when they are at the same temperature and pressure, and
observe ideal gas behavior. In practice, real gases show small deviations from
the ideal behavior and the law holds only approximately, but is still a useful
Avogadro's law is stated mathematically as:
the volume of the gas.
theamount of substanceof
a proportionality constant.
The most significant consequence of Avogadro's law is that theideal
gas constanthas the same value for
all gases. This means that:
Ideal gas law
A common rearrangement of this equation is by lettingRbe
the proportionality constant, and rearranging as follows:
This equation is known as theideal
293.15 K, we can find the volume of one mole of a gas:
273.15 K, the molar volume of an ideal gas is 22.71 dm3mol-1.
This site and its contents are not affiliated, connected,
associated with or authorized by the individual, family,
friends, or trademarked entities utilizing any part or
the subject's entire name. Any official or affiliated
sites that are related to this subject will be hyper
linked below upon submission
and Evisum, Inc. review.
Please join us in our mission to incorporate America's Four United Republics discovery-based curriculum into the classroom of every primary and secondary school in the United States of America by July 2, 2026, the nation’s 250th birthday. , the United States of America: We The
People. Click Here