Gas Laws: Part 2

Multiple Choice

Which container will have a lower pressure?

• left

• right

• they both have the same pressure

• I don't know

Multiple Choice

What is 50 C in Kelvin?

• 223 K

• 323 K

• 100 K

• 50 K

Multiple Choice

There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

Which law would you use to solve this problem?

• Charles' Law

• Boyle's Law

Multiple Choice

Chlorine gas occupies a volume of 1.2 liters at 720 torr pressure. What volume will it occupy at 1 atm pressure?

Which law would you use to solve this problem?

• Charles' Law

• Boyle's Law

Multiple Choice

What is the formula for Lussac's Law?

• T₁P₁=T₂P₂

• T₁V₁/T₂P₂

• P_1/T₁=P_2/T₂

• T₁/P₁=T₂/P₂

Multiple Choice

At constant Volume,When Temperature increases then the Pressure must...

• Increase

• decrease

Multiple Choice

Pressure and temperature have what kind of relationship?

• indirect

• inverse

• direct

• synergistic

Multiple Choice

A gas is collected at 22.0˚C and 745.0 mm Hg. When the temperature is changed to 0˚C, what is the resulting pressure?

• 456 mmHg

• 521 mmHg

• 689 mmHg

• 725 mmHg

Multiple Choice

A container of gas is initially at 0.500 atm and 25˚C. What will the pressure be at 125˚C?

• .419 atm

• .668 atm

• .765 atm

• .974 atm

Multiple Choice

In ideal gases, volume and number of moles have which kind of relationship?

• inverse

• direct

• indirect

• obtuse

Multiple Choice

What units will be found in the variables of a Dalton's law problem?

• kilopascals (kPa)

• liters (L)

• Kelvins (K)

• moles (mol)

Multiple Choice

Dalton's law equation is used to find what?

• the density of a pure gas

• the total pressure of a pure gas

• the total pressure of a gas mixture

• the volume of a gas mixture

Multiple Choice

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.

Multiple Choice

A tank of gas contains 50 kPa of helium, 50 kPa of argon, and 100 kPa of neon. What is the total pressure of the gas mixture?

• 100 kPa

• 50 kPa

• 200 L

• 200 kPa

Multiple Choice

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