Skip to main content
Ch.5 - Gases
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.5 - GasesProblema 65
Capitolo 5, Problema 65

A gas mixture contains 1.25 g N2 and 0.85 g O2 in a 1.55 L container at 18 °C. Calculate the mole fraction and partial pressure of each component in the gas mixture.

Guida verificata passo dopo passo
1
Convert the mass of each gas to moles using their molar masses: \( \text{Molar mass of } N_2 = 28.02 \text{ g/mol} \) and \( \text{Molar mass of } O_2 = 32.00 \text{ g/mol} \).
Calculate the total number of moles in the gas mixture by adding the moles of \( N_2 \) and \( O_2 \).
Determine the mole fraction of each gas by dividing the moles of each gas by the total moles of the gas mixture.
Use the ideal gas law \( PV = nRT \) to calculate the total pressure of the gas mixture, where \( R = 0.0821 \text{ L atm/mol K} \) and \( T = 18^\circ C = 291 \text{ K} \).
Calculate the partial pressure of each gas by multiplying its mole fraction by the total pressure.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
6m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Mole Fraction

Mole fraction is a way of expressing the concentration of a component in a mixture. It is calculated by dividing the number of moles of a specific component by the total number of moles of all components in the mixture. This dimensionless quantity helps in understanding the composition of the gas mixture and is crucial for calculating partial pressures.
Video consigliato:
Percorso guidato
00:36
Mole Fraction Formula

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 fundamental in calculating the behavior of gases under various conditions. In this context, it allows us to determine the partial pressures of nitrogen and oxygen in the gas mixture based on their mole fractions and the total pressure.
Video consigliato:
Percorso guidato
01:15
Ideal Gas Law Formula

Partial Pressure

Partial pressure is the pressure that a single component of a gas mixture would exert if it occupied the entire volume alone at the same temperature. It can be calculated using Dalton's Law, which states that the total pressure of a gas mixture is the sum of the partial pressures of its individual components. Understanding partial pressures is essential for analyzing gas mixtures and their behaviors.
Video consigliato:
Percorso guidato
00:48
Partial Pressure Calculation
Pratica correlata
Domanda del libro di testo

A 275-mL flask contains pure helium at a pressure of 752 torr. A second flask with a volume of 475 mL contains pure argon at a pressure of 722 torr. If we connect the two flasks through a stopcock and we open the stopcock, what is the partial pressure of argon?

3192
views
Domanda del libro di testo

A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 125 mmHg; Ar, 214 mmHg; and O2, 187 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas is present in a 12.0-L sample of this mixture at 273 K?

5930
views
Domanda del libro di testo

The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total pressure of 732 mmHg. What is the partial pressure of the hydrogen gas collected in this way? If the total volume of gas collected is 722 mL, what mass of hydrogen gas is collected?

4586
views
1
comments
Domanda del libro di testo

A 1.20-g sample of dry ice is added to a 755 mL flask containing nitrogen gas at a temperature of 25.0 °C and a pressure of 725 mmHg. The dry ice sublimes (converts from solid to gas), and the mixture returns to 25.0 °C. What is the total pressure in the flask?

2978
views
Domanda del libro di testo

What is the mole fraction of oxygen gas in air (see Table 5.3)? What volume of air contains 10.0 g of oxygen gas at 273 K and 1.00 atm?

2667
views
1
rank
1
comments
Domanda del libro di testo

The air in a bicycle tire is bubbled through water and collected at 25 °C. If the total volume of gas collected is 5.45 L at a temperature of 25 °C and a pressure of 745 torr, how many moles of gas were in the bicycle tire?

1692
views