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Plz explain Gas Eudiometry:
Gas Eudiometry
The realtionship amongst gases, when thay react with one another, is goverened by two laws, namely Gay-Lussac law and Avagadro's law.
Gaseous reactions for investigation purposes are studied in a closed graduated tube open at one end and the other closed end of which is provided with platinum terminals for the passage of electricity through the mixture of gases. Such a tube is known as Eudiometer tube and hence the name Eudiometry also used for Gas analysis.
During Gas Analysis, its Eudiometer tubed filled with mercury is inverted over a trough containing mercury. A known volume of the gas or gaseous mixture to be studied is next introduced, which displaces an equivalent amount of mercury.
The following reactions among gases can be drawn:
The various reagents used for absorbing different gases are
O3 → turpentine oil
O2 → alkaline pyrogallol
NO → FeSO4 Sol.
CO2, SO2 → alkali Sol. (NaOH, KOH, Ca(OH)2, HOCH2CH2NH2, etc.)
NH3 → acid Sol. or CuSO4 Sol.
Cl2 → water
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