Avogadro's law
Where;
V is the volume of the gas,
n is the number of moles of the gas,
k is the proportionality constant.
The most important consequence of Avogadro's law is the following: The ideal gas constant has the same value for all gases. This means that the constant;
Where;
p is the pressure of the gas,
T is the temperature of the gas.
has the same value for all gases, independent of the size or mass of the gas molecules. This statement is nontrivial, and it embodies Avogadro's ingenious insight into the nature of ideal gases.
One mole of an ideal gas occupies 22.4 liters (dm3) at STP, and occupies 24.45 litres at SATP (Standard Ambient Temperature and Pressure = 25 degrees C and 1 atm/101.3kPa). This volume is often referred to as the molar volume of an ideal gas. Real gases may deviate from this value.
Avogadro's law, together with the combined gas law, forms the ideal gas law.