Dalton's Law

A sample of hydrogen gas was collected over water at 20.0 ºC. The atmospheric pressure was 105.5 kPa. What is the pressure of the dry hydrogen gas?

• 17.5 mm Hg

• 105.5 KPa

• 107.8 kPa

• 103.2 kPa

Which equation represents Dalton's Law?

• e=mc2

• PV=nRT

• P1/T1=P2/T2

• Ptotal=P1, P2, P3...

Three gases, Ar, N2 and H2 are mixed in a container. Ar has a pressure of 255 torr, N2 has a pressure of 228 torr and H2 has pressure of 752torr. What is the total pressure in the container?

• 483torr

• 270torr

• 1235torr

Which is the correct equation for Dalton's law representing a mixture o three gases

• P_T = P₁ - P₂ - P₃

• P_T = P₁ + P₂ - P₃

• P₁ = P_T - P₂ - P₃

The partial pressure of a gas increases if

• Some particles of the gas are removed

• The temperature of the gas is lowered

• The gas is placed in a larger container

• The gas is placed in a smaller container

The partial pressure of a gas is not affected by:

• the temperature

• The volume of the container

• The identity of the gas

Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228torr and H2 has pressure of 752torr. What is the total pressure in the container?

• 483torr

• 270torr

• 1235torr

Dalton's law of...

• Partial Pressure

• Thermodynamics

• Ideal Gas

• Physics

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

• 234 mmHg

• 1.37 mmHg

• 2.64 mmHg

• 1, 494 mmHg

A 250 mL sample of oxygen is collected over water at 25° C and 760.0 torr pressure. What is the pressure of the dry gas alone? (Vapor pressure of water at 25° C = 23.8 torr)

• 783.8 torr

• 205.38 torr

• 1250 torr

• 736.2 torr