Avogadro's law
In 1811 the Italian chemist Amedeo Avogadro (1776-1856) put forward a hypothesis to explain why gases combine in simple ratios by volume.
Avogadro's law |
At constant T and P, the volume of a gas increases proportionately as its molar amount increases. If the molar amount is doubled, the volume is doubled.
V n
V= K_{4}n
The number of molecules in one mole of gas has been determined to be 6.022 Ã—10^{23} and is known as Avagadro constant.