Avogadro's Law states that the volume of a gas is directly proportional to the number of moles of gas present at constant temperature and pressure. In other words, if you increase the number of moles of gas, you increase the volume of the gas, and vice versa.
The constant in Avogadro's Law is the ratio of the volume of the gas to the number of moles of gas. This ratio is constant as long as the temperature and pressure remain constant.
Here are some examples:
- If you have 1 mole of gas at a certain temperature and pressure, and it occupies a volume of 22.4 L, then 2 moles of the same gas at the same temperature and pressure will occupy a volume of 44.8 L.
- If you double the number of moles of gas, you double the volume of the gas.
- If you halve the number of moles of gas, you halve the volume of the gas.
In essence, Avogadro's Law tells us that equal volumes of gases at the same temperature and pressure contain the same number of molecules.
