A mixture of hydrogen, nitrogen, and oxygen has a total...

Name: Problem 76, Chapter 11: Introductory Chemistry Essentials
Uploaded: 2021-04-25T16:13:01-08:00
Duration: 1 min 19 s
Channel: David Collins
Description: A mixture of hydrogen, nitrogen, and oxygen has a total pressure of 264 psi. The partial pressures of hydrogen and nitrogen are 41 psi and 168 psi, respectively. What is the composition of the mixture?

A mixture of hydrogen, nitrogen, and oxygen has a total pressure of 264 psi. The partial pressures of hydrogen and nitrogen are 41 psi and 168 psi, respectively. What is the composition of the mixture?

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Key Concepts

Dalton's Law of Partial Pressures

This principle states that in a mixture of non-reacting gases, the total pressure is equal to the sum of the individual partial pressures of the constituent gases. It allows us to understand how each gas contributes to the overall pressure of the mixture.

Partial Pressure

Partial pressure refers to the pressure that a single gas in a mixture would exert if it occupied the entire volume alone at the same temperature. It is essential for calculating the contribution of each gas to the total pressure and ultimately for determining mole fractions in a gas mixture.

Mole Fraction in Gas Mixtures

The mole fraction is the ratio of the number of moles of one component to the total number of moles in the mixture. In the context of gases, due to the direct proportionality between pressure and mole numbers at constant temperature and volume, the mole fraction can be calculated by dividing the partial pressure of a gas by the total pressure of the mixture.

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