Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

7. Gases

The Ideal Gas Law

General Chemistry

7. Gases

The Ideal Gas Law

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Multiple Choice

The system volume is 10 L at STP. If the temperature decreases to 30 K, what is the new volume, assuming pressure remains constant?

5.00 L

3.00 L

10.00 L

1.34 L

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Verified step by step guidance

Start by understanding the relationship between temperature and volume at constant pressure, which is described by Charles's Law. Charles's Law states that the volume of a gas is directly proportional to its temperature when pressure is held constant.

Express Charles's Law mathematically: \( \frac{V_1}{T_1} = \frac{V_2}{T_2} \), where \( V_1 \) and \( T_1 \) are the initial volume and temperature, and \( V_2 \) and \( T_2 \) are the final volume and temperature.

Identify the known values: \( V_1 = 10 \text{ L} \), \( T_1 = 273 \text{ K} \) (since STP is 273 K), and \( T_2 = 30 \text{ K} \). You need to find \( V_2 \).

Rearrange the equation to solve for \( V_2 \): \( V_2 = V_1 \times \frac{T_2}{T_1} \). Substitute the known values into the equation.

Calculate \( V_2 \) using the substituted values: \( V_2 = 10 \text{ L} \times \frac{30 \text{ K}}{273 \text{ K}} \). This will give you the new volume of the gas at 30 K.