Editing Amedeo Avogadro (section)

==Response to the theory==
The scientific community did not give great attention to Avogadro's theory, and it was not immediately accepted. [[André-Marie Ampère]] proposed a very similar theory three years later (in his ''{{lang|fr|Sur la détermination des proportions dans lesquelles les corps se combinent d'après le nombre et la disposition respective des molécules dont leurs particules intégrantes sont composées}}''; "On the Determination of Proportions in which Bodies Combine According to the Number and the Respective Disposition of the Molecules by Which Their Integral Particles Are Made"), but the same indifference was shown to his theory as well.

Only through studies by [[Charles Frédéric Gerhardt]] and [[Auguste Laurent]] on [[organic chemistry]] was it possible to demonstrate that Avogadro's law explained why the same quantities of molecules in a gas have the same volume.

Unfortunately, related experiments with some inorganic substances showed seeming contradictions. This was finally resolved by [[Stanislao Cannizzaro]], as announced at [[Karlsruhe Congress]] in 1860, four years after Avogadro's death. He explained that these exceptions were due to molecular dissociations at certain temperatures, and that Avogadro's law determined not only molecular masses but atomic masses as well.

In 1911, a meeting in Turin commemorated the hundredth anniversary of the publication of Avogadro's classic 1811 paper. King [[Victor Emmanuel III of Italy|Victor Emmanuel III]] attended, and Avogadro's great contribution to chemistry was recognized.

[[Rudolf Clausius]], with his kinetic theory on gases proposed in 1857, provided further evidence for Avogadro's law. [[Jacobus Henricus van 't Hoff]] showed that Avogadro's theory also held in dilute solutions.

Avogadro is hailed as a founder of the [[Atomic theory#Avogadro|atomic-molecular theory]].