Gas Mixtures
History
Real World Application
Dalton's Law and Vocabulary
Pressure Calculations
100

What term is used to describe the pressure each gas would release if it used the entire volume alone?

What Is Partial Pressures?


100

Who was the english scientist that made Dalton's Law of Partial Pressures in the early 19th century?

Who is John Dalton?


100

Mountain climbers experience an increase in difficulty of breathing when the altitude increases. Use Dalton's law to explain why this occurs?

What is because of the lower partial pressure of oxygen at higher altitudes?

100

What is the formula for calculating total pressure?

What is Ptotal = P1+P2+P3

100

If the total pressure in an oxygen tank is 800 mmHg, and the partial pressure of oxygen is 600 mmHg, what is the partial pressure of the other gases?

What is 200 mmHg?

200

When calculating partial pressure, what is multiplied by the mole fraction of that gas?

What is the total pressure of the mixture?

200

In what year did John Dalton first publish his work on the Law of Partial Pressures?

What is 1802?


200

How can Dalton's Law be used to understand and control the behavior of gases in experimental setups?

What is calculating the partial pressures of gases in reaction vessels for control?

200

What term is used when describing a gas that follows the assumptions of Dalton's Law?

What is an ideal gas?

200

If a gas mixture is made up of 30% helium and 70% nitrogen, and the total pressure is 800 mmHg, what is the partial pressure of helium?

What is 240 mmHg?

300

What does Dalton's Law say about the total pressure of a gas mixture?

What is the total pressure = the sum of the partial pressures of each gas?

300

When did John Dalton observe Dalton's law?

What is 1801?

300

When doctors give anesthesia to patients why do they have to carefully monitor the partial pressures of the gases?

What is to ensure an appropriate amount of the medication is given and to prevent negative effects?

300

What term is used to describe the ratio of moles of a gas to the total moles of the mixture?

What is mole fraction?

300

If we have 100 gaseous molecules at 100° C which exert a pressure of 0.10 atm in a container, then adding another 100 gaseous molecules to the same container at the same temperature, what will the pressure increase to? 

What is 0.2 atm

400

If you double the moles of a certain gas in a mixture while keeping everything else constant, what happens to its partial pressure?

What is it doubles?

400

What type of experiments did John Dalton make to determine his conclusions on how gas mixtures behave?

What are experiments that involve the behavior of gases under different pressures?

400

Why is it necessary for astronauts to beware of Dalton's law when consuming oxygen in space?

What is to ensure the appropriate partial pressures of gases for safe breathing?

400

What are the values used in STP? (Standard, Temperature, Pressure)

What is 0 degrees celcius and 1 atmosphere?

400

The pressure of a mixture of nitrogen, carbon dioxide, and oxygen is 300 kPa. What is the partial pressure of oxygen if the partial pressures of the nitrogen and carbon dioxide are 200 kPA and 48 kPa, respectively?

What is 52 kPa?


500

If you increase the total pressure of a gas mixture while keeping individual gases constant, what happens to the partial pressures?

What is they increase proportionately?

500

What is the name of Dalton's atomic theory, which helped him develop his gas law?

What is Dalton's Atomic Theory?

500

During scuba diving how does Dalton's Law affect the partial pressures of oxygen and nitrogen in the tanks used for diving?

 What is it influences the partial pressures of oxygen and nitrogen in tanks by making sure that they are controlled to prevent oxygen toxicity and decompression sickness.



500

What are the units used in Dalton's law?

What is torr, atmospheres, pascal, kilopascal, mol?

500

A sample with a total pressure of 900 torr contains H2 and O2 with a mole fraction of 0.49 H2. Find the partial pressure of O2

What is 450 torr?