Avogadro's Law fundamentally describes the relationship between the volume of a gas and the amount of gas present. A modern statement of Avogadro's Law dictates that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."
In simpler terms, this law implies:
- For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional.
- This proportionality holds true as long as the temperature and pressure remain constant.
This relationship can be summarized by the following:
V ∝ n (where T and P are constant)
Where:
- V = Volume of the gas
- n = Amount of substance (number of moles)
This proportionality is extremely useful in stoichiometry and gas calculations. It helps to relate the volumes of gases in chemical reactions to the number of moles involved, allowing for easy determination of reactant and product quantities.
