Which law states that, under the same conditions of temperature and pressure, equal volumes of all gases contain an equal number of molecules?
- AGraham's law
- BPascal's law
- CAvogadro's law
- DCoriolis effect
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (c) Avogadro's law
Explanation
Avogadro's law states that equal volumes of all gases, at the same temperature and pressure, contain an equal number of molecules.
Proposed by Amedeo Avogadro (1811), it is a special case of the ideal gas law.
Distractors differ: Graham's law covers gas diffusion, Pascal's law fluid pressure, and the Coriolis effect rotational deflection.