Quiz – Get out your Quiz – Get out your notes!!notes!!

Quiz (10 questions)Quiz (10 questions)

1)1) Which law would you use if you were Which law would you use if you were given only pressure and volume?given only pressure and volume?

2)2) Which law would you use if you were Which law would you use if you were given only temperature and volume?given only temperature and volume?

3)3) Which law would you use if you were Which law would you use if you were given pressure, temperature, and given pressure, temperature, and volume?volume?

Quiz (10 questions)Quiz (10 questions)

4)4) If I increase the temperature in a If I increase the temperature in a sample of gas, what happens to the sample of gas, what happens to the motion of the particles?motion of the particles?

5)5) If the particles collide more If the particles collide more frequently with the sides of the frequently with the sides of the container, does the pressure container, does the pressure increase or decrease?increase or decrease?

Quiz (10 questions)Quiz (10 questions)

6)6) A sample of gas at 47°C and 1.03 A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L. atm occupies a volume of 2.20 L. What volume would this gas occupy What volume would this gas occupy at 107°C and 0.789 atm? at 107°C and 0.789 atm?

7)7) A sample of air has a volume of 140 A sample of air has a volume of 140 mL at 67°C. At what temperature mL at 67°C. At what temperature will its volume be 50 mL at constant will its volume be 50 mL at constant pressure?pressure?

Quiz (10 questions)Quiz (10 questions)

8)8) Convert 15Convert 15°C to Kelvin.°C to Kelvin.

9)9) Convert 2.5 atm to mm Hg.Convert 2.5 atm to mm Hg.

10)10) Convert 236505 Pa to torr. Convert 236505 Pa to torr.

Dalton’s Law of Dalton’s Law of Partial PressuresPartial Pressures

Dalton’s LawDalton’s Law

Proposed by John DaltonProposed by John Dalton Says that the pressure of a gas Says that the pressure of a gas

mixture is the sum of the individual mixture is the sum of the individual pressures of each gas presentpressures of each gas present

PPTT = P = P11 + P + P22 + P + P33 +….. +…..

ExampleExample

A balloon contains a mixture of carbon A balloon contains a mixture of carbon dioxide, nitrogen, and oxygen. The total dioxide, nitrogen, and oxygen. The total pressure of the balloon is 760 torr. The pressure of the balloon is 760 torr. The partial pressure of the carbon dioxide is partial pressure of the carbon dioxide is 0.285 torr and the partial pressure of the 0.285 torr and the partial pressure of the nitrogen is 593.525 torr. What is the partial nitrogen is 593.525 torr. What is the partial pressure of the oxygen?pressure of the oxygen?

760 = 0.285 + 593.525 + P760 = 0.285 + 593.525 + PO2O2

PPO2O2 = 166.190 torr = 166.190 torr

Practice page 35Practice page 35

A container of gas contains nitrogen, A container of gas contains nitrogen, oxygen, and helium. The pp of the oxygen, and helium. The pp of the oxygen is 0.235 atm, the pp of the oxygen is 0.235 atm, the pp of the nitrogen is 0.715 atm, and the pp of nitrogen is 0.715 atm, and the pp of the helium is 0.050 atm. What is the the helium is 0.050 atm. What is the total pressure of the gas?total pressure of the gas?

PracticePractice

The total pressure of a contained The total pressure of a contained sample of gas is 1.53 atm. The sample of gas is 1.53 atm. The sample contains chlorine gas with a sample contains chlorine gas with a pp of 0.203 atm, neon gas with a pp pp of 0.203 atm, neon gas with a pp of 0.830 atm, and an unknown gas. of 0.830 atm, and an unknown gas. What is the pp of the unknown gas?What is the pp of the unknown gas?

PracticePractice

If I have 4 moles of a gas at a If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of pressure of 5.6 atm and a volume of 12 liters, what is the temperature?12 liters, what is the temperature?

PracticePractice

If I have an unknown quantity of gas If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 K, 31 liters, and a temperature of 87 K, how many moles of gas do I have? how many moles of gas do I have?

PracticePractice

If I contain 3 moles of gas in a If I contain 3 moles of gas in a container with a volume of 60 liters container with a volume of 60 liters and at a temperature of 400 K, what and at a temperature of 400 K, what is the pressure inside the container?is the pressure inside the container?