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Ch.8 Gases
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 13th Edition
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTimberlake 13th EditionCh.8 GasesProblema 66c
Capitolo 8, Problema 66c

Indicate which diagram (1, 2, or 3) represents the volume of the gas sample in a flexible container when each of the following changes (a to d) takes place:

c. Atmospheric pressure decreases if temperature does not change.

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Step 1: Recall Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when temperature is constant. This means that if atmospheric pressure decreases, the volume of the gas in a flexible container will increase.
Step 2: Analyze the diagrams provided. Diagram 1 shows a small volume with gas particles closely packed, Diagram 2 shows a medium volume with gas particles more spread out, and Diagram 3 shows a large volume with gas particles even more spread out.
Step 3: Since atmospheric pressure decreases, the gas particles will exert less force on the walls of the flexible container, allowing the container to expand. This corresponds to an increase in volume.
Step 4: Compare the diagrams to identify which one represents the largest volume. Diagram 3 shows the most expanded container, indicating the largest volume.
Step 5: Conclude that Diagram 3 represents the volume of the gas sample when atmospheric pressure decreases and temperature remains constant.

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Gas Laws

Gas laws describe the behavior of gases under various conditions of pressure, volume, and temperature. Key laws include Boyle's Law, which states that pressure and volume are inversely related when temperature is constant, and Charles's Law, which relates volume and temperature. Understanding these laws is essential for predicting how a gas will respond to changes in its environment.
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Flexible Container

A flexible container, such as a balloon or a syringe, can change its volume in response to external pressure changes. When atmospheric pressure decreases, the gas inside the container can expand, leading to an increase in volume if the temperature remains constant. This concept is crucial for visualizing how gases behave in different scenarios.
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Pressure-Volume Relationship

The pressure-volume relationship is a fundamental concept in gas behavior, particularly illustrated by Boyle's Law. When the pressure exerted on a gas decreases, the volume of the gas increases, provided the temperature remains unchanged. This relationship helps in understanding how gases will occupy space in response to changes in external conditions.
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