Kinetic Molecular Theory. 1. At constant temperature, the lighter the gas molecules, the larger...
Question:
Kinetic Molecular Theory.
1. At constant temperature, the lighter the gas molecules, the larger the average velocity.
2. As temperature decreases, the average kinetic energy of a sample of gas molecules decreases.
3. At constant temperature, the lighter the gas molecules, the smaller the average kinetic energy.
4. In order for two separate 1.0 L samples of O_2(g) and H_2(g) to have the same average velocity, the O_2(g) sample must be at a higher temperature than the H_2(g) sample.
5. Ideal gas molecules have small volumes and exert weak attractive forces on one another.
6. Real gas molecules behave most ideally at high temperature and low pressure.
Kinetic Molecular Theory:
The kinetic molecular theory is a microscopic and mathematical description of gases and the behavior of its molecules.
It assumes point masses for the gas molecules and constant, zig-zag motion.
Answer and Explanation: 1
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View this answer- Since {eq}\bar{v} = \sqrt{\dfrac{8RT}{\pi M}} {/eq}, a smaller value of M or lighter molecule has higher average velocity.
Thus, statement 1 true.
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Kinetic Molecular Theory of Gases | Properties & Examples
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Chapter 7 / Lesson 1
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Learn what the properties of gases are and discover the kinetic molecular theory of gases. Understand the characteristics of ideal gases and know examples of the properties of gases.
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