Dalton's Law of Partial Pressures

What is Dalton's Law of Partial Pressures?

• Dalton's Law states that the total pressure in a mixture of gases is equal to the sum of the individual pressures of each gas.

• Dalton's Law states that the pressure of a gas is directly proportional to its temperature.

• Dalton's Law states that in a mixture of gases, the total pressure is equal to the average of the individual pressures.

• Dalton's Law states that the pressure of a gas decreases as the volume increases.

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

• 7.00 atm

• 8.00 atm

• 9.00 atm

• 10.00 atm

The total pressure can be calculated as the ____ of the pressure of each individual gas.

• product (×)

• difference (-)

• sum (+)

• average (÷)

How do you calculate the total pressure of a gas mixture?

• Total pressure (P_total) = P_1 + P_2 + P_3 + ... + P_n, where P_1, P_2, ..., P_n are the partial pressures of the individual gases.

• Total pressure (P_total) = P_1 * P_2 * P_3 * ... * P_n, where P_1, P_2, ..., P_n are the partial pressures of the individual gases.

• Total pressure (P_total) = (P_1 + P_2 + P_3) / n, where P_1, P_2, P_3 are the partial pressures of the individual gases and n is the number of gases.

• Total pressure (P_total) = P_1 - P_2 + P_3 + ... + P_n, where P_1, P_2, ..., P_n are the partial pressures of the individual gases.

If the total pressure of a gas mixture is 864 mmHg and the partial pressures of hydrogen and nitrogen are 220 mmHg and 410 mmHg respectively, what is the partial pressure of water vapor?

• 234 mmHg

• 200 mmHg

• 250 mmHg

• 300 mmHg

What is a partial pressure?

• The total pressure exerted by all gases in a mixture.

• The pressure that a single gas in a mixture would exert if it occupied the entire volume alone.

• The pressure exerted by a liquid in a closed container.

• The pressure difference between two gases in a mixture.

Which equation represents the correct method to calculate the total pressure exerted by two gases?

• P_total = P_1 + P_2

• P_total = P_1 - P_2

• P_total = P_1 * P_2

• P_total = P_1 / P_2