**Avogadro’s Law** in simple words

Avogadro, in 1813, gave this law. It relates the volume and number of particles of ideal gases at constant temperature and pressure.

**Avogadro’s Law** Statement

According to Avogadro’s law “equal volumes of all gases at the same temperature and pressure contain the same number of molecules.”

**Avogadro’s Law** Explanation

It means if two gases have the same volume, same temperature and same pressure then their number of molecules will also be the same. Mathematically law can be written as :

V ∝ n

Or

V = Kn

**On the bases of this law, Avogadro pointed out that**

**22.4 dm ^{3}** of any gas at STP contains

**6.02 x 10**molecules.

^{23}Or

** 24 dm ^{3}** of any gas at RTP contains

**6.02 x 10**molecules.

^{23}Or in other words

** The volume of 6.02 x 10 ^{23} molecules of any gas at STP = 22.4 dm^{3} **

Or

**The volume of 6.02 x 10 ^{23} molecules of any gas at RTP = 24 dm^{3}**

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