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Ch.5 - Gases
Chapter 5, Problem 126

A sample of N2O3(g) has a pressure of 0.017 atm. The temperature (in K) is doubled and the N2O3 undergoes complete decomposition to NO2(g) and NO(g). Find the total pressure of the mixture of gases assuming constant volume and no additional temperature change.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Ideal Gas Law

The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of a gas through the equation PV = nRT. This law is essential for understanding how changes in temperature and pressure affect gas behavior. In this scenario, the initial pressure of N2O3 and the effects of temperature doubling on gas pressure are analyzed using this principle.
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Stoichiometry of Gas Reactions

Stoichiometry involves the calculation of reactants and products in chemical reactions. For the decomposition of N2O3 into NO2 and NO, the stoichiometric coefficients indicate the molar relationships between the gases produced. Understanding these relationships is crucial for determining the total pressure of the gas mixture after the reaction.
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Dalton's Law of Partial Pressures

Dalton's Law states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas. This concept is vital for calculating the total pressure after the decomposition of N2O3, as it allows for the addition of the partial pressures of NO2 and NO produced from the reaction, assuming no volume change.
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