ChemBCPUnit2TestReviewTri3

A gas that has a pressure of 2 atm and a volume of 10 L.  What would be the new volume if the pressure was changed to 1 atm?

• P1/T1 = P2/T2
• P1V1 = P2V2
• V1/n1 = V2/n2
• PV = nRT

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?

• Pt = P1 + P2 + P3 + ...
• P1V1 = P2V2
• V1/T1 = V2/T2
• P1V1/T1 = P2V2/T2

Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 

• V1/n1 = V2/n2
• PV = nRT
• P1/T1 = P2/T2
• V1/T1 = V2/T2

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

• P1V1 = P2V2
• Pt = P1 + P2 + P3 +...
• P1/T1 = P2/T2
• V1/n1 = V2/ n2

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC.  What is the new volume of the gas?

• P1V1 = P2V2
• P1/T1 + P2/T2
• PV = nRT
• V1/T1 = V2/T2

A gas fills a balloon at a temperature of 27 ^oC and 1 atm of pressure. What will the pressure of the balloon be if the gas is heated to 127 ^oC?

• P1V1 = P2V2
• PV = nRT
• P1/T1 = P2/T2
• V1/T1 = V2/T2

A container has 0.504 moles of a gas at a volume of 2680 mL.  When the number of moles changes to 0.423 moles, what is the new volume?

• PV = nRT
• V1/n1 = V2/n2
• P1V1/T1 = P2V2/T2
• P1V1 = P2V2

According to Boyle's law of PV, at constant temperature, as the pressure of a given sample of gas is increased, the volume will –

• Increase
• Decrease
• Remains the same

Boyle's PV law : When _______ is held constant, the pressure and volume of a gas are ________  proportional

• temperature,  equally
• mass, inversely
• temperature, inversely
• mass, equally

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change