Partial Pressure

A container holds four times as many moles of CO₂ as O₂. If the total pressure in the container is 20 atm, what is the pressure exerted by carbon dioxide?

In a mixture of gases, each gas exerts pressure independently of the others.

• TRUE

• FALSE

Tags

NGSS.HS-PS2-1

A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

• 2 atm

• 4 atm

• 3 atm

• 9 atm

The partial pressures of CH₄, N₂, and O₂ in a sample of gas were found to be 135 mm Hg, 508 mm Hg, and 571 mm Hg, respectively. Calculate the mole fraction of nitrogen.

• 20.4

• 0.470

• 0.418

• 0.751

A container is filled with H₂, and H₂O. Calculate the partial pressure of H₂ when the pressure of water is 17 torr. The total pressure of the gases is 750 torr.

• 767.5torr

• 733torr

• 42.86torr

In Figure 5.1, the partial pressure of ozone is given in measurements of:

• miles.

• millipascals.

• millipascals per kilogram.

• kilometers.

According to Figure 5.1, the ozone partial pressure at an altitude of 15 kilometers is:

• less than 2 millipascals.

• more than 2 millipascals but less than 4 millipascals.

• more than 4 millipascals but less than 6 millipascals.

• more than 6 millipascals but less than 8 millipascals.

According to Figure 5.1, the greatest change in ozone partial pressure occurs in the altitude range of:

• 1 to 15 kilometers.

• 15 to 20 kilometers.

• 20 to 25 kilometers.

• 25 to 30 kilometers.

In Figure 5.1, altitude is presented in intervals of:

• 1 millipascal.

• 1 kilometer.

• 2 millipascals.

• 2 kilometers.

A gas mixture contains nitrogen, oxygen, and argon. If the partial pressures are 3 atm, 2 atm, and 1 atm respectively, what is the total pressure of the mixture?

• 5 atm

• 6 atm

• 7 atm

• 8 atm