Dry air is 78.1 % nitrogen. What is the partial pressure of nitrogen when the atmospheric pressu

step 1 Well, according to Dalton's law of partial pressure, it states that the total pressure of a gas

Dry air is 78.1 % nitrogen. What is the partial pressure of...

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Key Concepts

Partial Pressure

Partial pressure is the pressure exerted by an individual component of a gas mixture. It represents the contribution of that particular gas to the overall pressure of the system and is calculated as the product of the total pressure and the mole fraction of the gas.

Dalton's Law of Partial Pressures

Dalton's Law of Partial Pressures is a fundamental principle in gas mixtures which states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of each individual gas. This law allows for the calculation of an individual gas's pressure when the composition and total pressure of the mixture are known.

Mole Fraction

The mole fraction is a way of expressing the concentration of a component in a mixture, defined as the ratio of the moles of the component to the total moles of all components. In the context of gas mixtures, it directly relates to the percentage of the gas in the overall mixture and is used in calculating its partial pressure.

Atmospheric Pressure

Atmospheric pressure is the force per unit area exerted by the weight of the Earth's atmosphere. It serves as the total pressure in examples involving gas mixtures and is the starting point for determining the partial pressures of individual gases using the mole fraction.

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