Topic Content:
- Avogadro’s Law
In 1811, Amedeo Avogadro, who also studied the behaviour of gases when they react, proposed the law which states that:
Equal volume of all gases at the same temperature and pressure contains the same number of molecules.
The law shows that the volume occupied by a gas depends on the number of molecules it contains at a given temperature and pressure.
Let’s show how Avogadro’s law explains Gay-Lussac’s law
Using the following examples,
| 2H2(g) | + | O2(g) | → | 2H2O(g) |
Gay-Lussac’s law | 2 vols | | 1 vol | | 2 vols |
Avogadro’s law | 2 molecules | | 1 molecule | | 2 molecules |
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