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Sagot :
The Pressure of Dry H2 is 738.2 mm Hg.
The total pressure of an ideal gas mixture is equal to the sum of its component gases' partial pressures, according to Dalton's law of partial pressures, which summarizes this observation.
- Water vapor, which is always present above a sample of liquid water, is a byproduct of water evaporation.
- When a gas is gathered over water, it becomes saturated with water vapor, and the total pressure of the mixture equals the partial pressure of the gas plus the partial pressure of the water vapor.
- The pressure of the pure gas is thus equal to the total pressure less the pressure of the water vapor; this pressure is known as the "dry" gas pressure because it only applies to the gas itself and excludes the water vapour.
Saturated vapour pressure of this case is 3.8 mm Hg.
[tex]Pdihydrogen =742 mm Hg -3.8 mm Hg\\ = 738.2 mm Hg[/tex]
To know more about partial pressure -
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