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Understanding Partial Pressure in Gas Mixtures

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Understanding Partial Pressure in Gas Mixtures

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Questions and Answers

What is the definition of partial pressure?

The total force a substance applies over an area

The pressure of each gas in a mixture (correct)

The total volume of a gas mixture

The percentage composition of a gas in a mixture

How does pressure and volume relate to each other in gases?

They have an inverse relationship (correct)

They have no relation

They both increase together

They have a direct relationship

What is the composition of air in terms of nitrogen, oxygen, and other gases?

75% nitrogen, 20% oxygen, 5% others

78% nitrogen, 21% oxygen, 1% others (correct)

70% nitrogen, 30% oxygen, 0% others

80% nitrogen, 10% oxygen, 10% others

Which factor has a direct relationship with pressure?

Temperature Signup and view all the answers

Why is understanding partial pressure important when analyzing gas mixtures?

To identify the pressure exerted by each gas in the mixture Signup and view all the answers

What is the partial pressure of gas Z in the first example provided?

0.57 atm Signup and view all the answers

In the second example, what is the total pressure of gases in the collection tube?

890 torr Signup and view all the answers

What does Dalton's Law of Partial Pressure help determine?

Pressure of individual gases in a mixture Signup and view all the answers

Why can real gases sometimes not follow all the rules of an ideal gas according to the text?

Because they violate kinetic molecular theory at low pressures or high temperatures Signup and view all the answers

When can Dalton's Law of Partial Pressure be accurately applied?

At low pressures or high temperatures Signup and view all the answers

What is the main concept behind Dalton's Law of Partial Pressures?

The pressures of all gases in a mixture add up to the total pressure of the gas solution. Signup and view all the answers

How can the partial pressure formula, PT = P1 + P2 + P3 + PN, be applied?

It is used to determine the individual pressures of gases in a mixture. Signup and view all the answers

Why is the concept of mole ratio important when comparing gas compositions?

It allows for comparison even when gases have different volumes or masses. Signup and view all the answers

How does vapor pressure affect the total pressure of a gas when it bubbles through water?

It increases the total pressure due to the presence of water molecules. Signup and view all the answers

In Example 1 from the text, what was the key reason behind using Dalton's Law of Partial Pressures?

To calculate the partial pressure of gas Z. Signup and view all the answers