How do you calculate partial pressure of water vapour in air?

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SUMMARY

The calculation of the partial pressure of water vapor in air is based on Dalton's Law of Partial Pressures. This law states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the individual partial pressures of each gas. To determine the partial pressure of water vapor, one must know the total pressure of the gas mixture and the mole fraction of the water vapor present.

PREREQUISITES
  • Understanding of Dalton's Law of Partial Pressures
  • Knowledge of gas mixtures and their properties
  • Familiarity with mole fractions in chemistry
  • Basic principles of thermodynamics
NEXT STEPS
  • Research calculations involving Dalton's Law of Partial Pressures
  • Learn about the ideal gas law and its applications
  • Explore methods for measuring total pressure in gas mixtures
  • Study the effects of temperature on vapor pressure of water
USEFUL FOR

Students in chemistry, atmospheric scientists, and professionals in fields related to environmental science and meteorology will benefit from this discussion.

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How do you calculate partial pressure of water vapour in air??
 
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Use Dalton's law of Partial Pressure.
Total Pressure exerted by a mixture of non-reacting gases is equal to the sum of individual partial pressures.
 

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