Question

Air is a homogeneous mixture of various gases give reasons

Answer 1

Air is mixed up of many gases.Pure air is a homogeneous mixture made primarily of nitrogen and oxygen. Its elements are not readily separated or distinguished from one another. The composition of air is not uniform and may be influenced by environmental factors, such as industrial pollution, heavy forestation or volcanic activity.

Air is a mixture of nitrogen, oxygen, carbon dioxide, argon, water vapour,hydrogen etc in their gaseous forms.

Air is not ‘considered’ to be a homogeneous mixture of gases, it is a homogeneous mixture of gases according to the definition:

Homogeneous is a material if there is no change of phase between any two points inside the material.

This definition includes, besides mixtures of different substances, also mixtures of different phases of the same substance, as, for example, water and ice.

Mixtures of gases are always homogeneous, because there is almost instantaneous mixing of them throughout the whole volume of the mixture.

This, of course, holds only for clean gases: If besides the gases, even small amounts of liquid or solid particulates are suspended in the air (like fog or smoke), then the mixture is heterogeneous.

Answer 2

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$Question$

Air is a homogeneous mixture of various gases give reasons

$Answer$

Air is called a homogeneous mixture because it is not a compound (which has a fixed amount of elements in a definite ratio), but rather it is a mixture composed of about 21% O2, 78% N2, 0.9% Ar, 0.04% CO2 and a smaller percentage of other gases. The important word is about, since the composition of the mixture that we call “air” can vary somewhat

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