Dalton's Law

Two gases A and B with a mole ratio of 3:5 respectively, are combined in a container and exert a pressure of 8 atm. If B is removed, what would be the pressure due to A only, with the temperature remaining constant?

• 5 atm

• 2 atm

• 3 atm

• 4 atm

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?

On Venus, the atmospheric pressure is 2700 mmHg and nitrogen gas makes up 3.0% of the atmosphere. What is the partial pressure of nitrogen on Venus?

• 2697 mmHg

• 81 mmHg

• 2619 mmHg

• 3 mmHg

A flask holds five times as many moles of N₂ as O₂. If the total pressure in the jar is 18 atm, what is the pressure exerted by oxygen?

• 18 atm

• 6 atm

• 3 atm

• 15 atm

If two gases, A and B, in separate 1 liter containers exert pressures of 2 atm and 3 atm respectively, what will be the pressure exerted when both gases are put together in a single 1 liter container?

• 5 atm

• 6 atm

• 10 atm

• 11 atm

Complete the sentence using total, partial, or complete. The pressure that one particular gas exerts when it is part of a mixture of gases is called the pressure of that gas.

Argon makes up 0.93% of the atmosphere. In a given sample of air, the partial pressure of argon is 6.54 mmHg. What is the pressure of the sample?

• 703 mmHg

• 70.3 mmHg

• 654 mmHg

• 760 mmHg

Increasing the pressure in the cylinder by adding a gas not involved in the reaction will increase the total gas pressure in the cylinder.

• TRUE

• FALSE

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

• TRUE

• FALSE

Dalton's Law states...

• that at a constant temperature the volume of a confined ideal gas varies inversely with its pressure.

• that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases

• how gases tend to expand when heated

• that the density of an ideal gas at constant pressure varies inversely with the absolute temperature of the gas.