A vessel of volume 100 cm3 contains 0.25 mol o2 and 0.034 mol co2 at 10.0c. Calculate the partial pressure of each component and their total pressure

Respuesta :

Answer: The partial pressure of oxygen is 76.56 atm , partial pressure of carbon dioxide is 10.44 atm and the total pressure is 87 atm.

Explanation:

According to the ideal gas equation:'

[tex]PV=nRT[/tex]

P = Pressure of the gas = ?

V= Volume of the gas = [tex]100cm^3=0.1L[/tex] [tex]1L=1000cm^3[/tex]

T= Temperature of the gas = 10°C = 373 K      

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas= 0.25 +0.034 = 0.284 moles

[tex]P=\frac{nRT}{V}=\frac{0.284\times 0.0821\times 373}{0.1}=87atm[/tex]

[tex]x_{O_2}[/tex] = mole fraction of oxygen=[tex]\frac{\text {moles of }O_2}{\text {moles of }O_2+\text{moles of }CO_2}=\frac{0.25}{0.25+0.034}=0.88[/tex],  

[tex]x_{CO_2}[/tex] =mole fraction of carbon dioxide=[tex]\frac{\text {moles of }CO_2}{\text {moles of }O_2+\text{moles of }CO_2}=\frac{0.034}{0.25+0.034}=0.12[/tex]

partial pressure of oxygen = [tex]p_{O_2}=x_{O_2}\times P=0.88\times 87=76.56atm[/tex]

partial pressure of carbon dioxide= [tex]p_{CO_2}=x_{CO_2}\times P=0.12\times 87=10.44atmatm[/tex]

The partial pressure of oxygen is 76.56 atm , partial pressure of carbon dioxide is 10.44 atm and the total pressure is 87 atm.