Chemical Engineering Questions and Answers – Ideal Gas Mixtures and Partial Pressure

This set of Chemical Engineering Test focuses on “Ideal Gas Mixtures and Partial Pressure”.

1. A container has two gases at 27^oC, one with molar volume 6 L/mole, another with molar volume 3 L/mole, what is the total pressure of the container?
a) 6.9 atm
b) 8.5 atm
c) 12.3 atm
d) 15.8 atm
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2. The fraction of gas in a container is 0.1, if the total pressure of the container is 10 atm, what is the partial pressure of the gas?
a) 1 atm
b) 5 atm
c) 10 atm
d) 20 atm
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3. The fraction of gas in a container is 0.5, if the total volume of the container is 6 liter, what is the volume of the gas?
a) 2 liter
b) 3 liter
c) 5 liter
d) 6 liter
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4. A gas mixture contains 30% CO₂, 40% O₂, 30% N₂, if the partial pressure of CO₂ is 6 Pa, what is the total pressure of gas mixture?
a) 6 Pa
b) 10 Pa
c) 20 Pa
d) 60 Pa
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5. The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2^n-1, the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture?
a) 3
b) 5
c) 10
d) 15
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6. A gas mixture comprises of 20% CO₂, 50% O₂, and 30% N₂ has the total pressure 100 Pa at temperature -73^oC, if the temperature is increased to 27^oC, what is the new partial pressure of N₂?
a) 15 Pa
b) 30 Pa
c) 45 Pa
d) 60 Pa
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7. A container has gas mixture of 20% H₂ and 80% N₂ with total pressure P, now same amount of O₂ is added to the mixture, what is the new partial pressure of N₂?
a) 0.2P
b) 0.8P
c) P
d) 1.6P
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8. A container has gas mixture of 40% CO₂ and 60% H₂ with total pressure 10 Pa, if now O₂ is added to it isothermally so that the final composition of the mixture becomes 20% CO₂, 30% H₂, and 50% O₂, what is the partial pressure of O₂ in the new composition?
a) 5 Pa
b) 10 Pa
c) 20 Pa
d) 35 Pa
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9. A gas mixture has 30% O₂, 40% H₂, and 30% N₂ with molar volume of N₂ 10 L/mole at temperature 27^oC, what is the partial pressure of H₂?
a) 2.4 atm
b) 3.6 atm
c) 4.8 atm
d) 6.4 atm
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10. A gas mixture contains 20% CO, 30% SO₂, and 50% N₂, if the partial pressure of N₂ is 5 atm at 27^oC, what is the molar volume of N₂?
a) 2.4 liter
b) 3.7 liter
c) 4.9 liter
d) 5.6 liter
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11. What is the total pressure of contained if it contains 0.5 fraction of O₂ with partial pressure 3 Pa, 0.3 fraction of H₂ with partial pressure 5 Pa, 0.2 fraction of CO₂ with partial pressure 15 Pa?
a) 6 Pa
b) 7 Pa
c) 8 Pa
d) 9 Pa
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12. What is the total pressure of contained if it contains 0.3 fraction of N₂ with partial pressure 8 Pa, 0.3 fraction of H₂ with partial pressure 2 Pa, 0.4 fraction of CO₂ with partial pressure 15 Pa?
a) 6.4 Pa
b) 7 Pa
c) 8.5 Pa
d) 9 Pa
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13. What is the partial pressure of O₂ with fraction 0.1, if the total pressure is 10 Pa?
a) 1 Pa
b) 3 Pa
c) 5 Pa
d) 7 Pa
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14. A container with total volume 10 liter is filled with 20% of O₂, 40% of N₂, and 40% of CO, what is the volume of O₂?
a) 2 liter
b) 4 liter
c) 8 liter
d) 10 liter
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15. A vessel contains 10 moles of O₂ and some other gases, total pressure is 10 atm, what is the partial pressure of O₂?
a) 1 atm
b) 10 atm
c) 100 atm
d) Cannot be determined
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Sanfoundry Global Education & Learning Series – Basic Chemical Engineering.

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