In 1812, who described the hypothesis that equal volumes of different gases contain an equal number of molecules?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Amedeo Avogadro.
In 1812, Amedeo Avogadro proposed the hypothesis that equal volumes of different gases, at the same temperature and pressure, contain an equal number of molecules. This concept is now known as Avogadro's Law. His groundbreaking idea helped in understanding the relationship between the volume of gas and the number of molecules it contains, which later led to the development of the Avogadro constant (6.022 × 10²³). Avogadro's work was fundamental in the development of modern atomic and molecular theory.