The given figure P 6.15 shows the distribution of molecular speeds of CO 2 at 25 ° C . The curve for CO 2 at − 100 ° C which shows the difference between distributions of molecular speed is to be explained. Concept introduction: According to kinetic molecular theory postulates, Particles present in the gas have consistent and random motion. They collide with each other or the walls of their container. The average kinetic energy of every gas particles is directly related to temperature. The speed of gas molecules increases with increase in temperature. Molecules having low molar mass will move faster than the molecules with high molar mass. To determine: The curve for CO 2 at − 100 ° C which shows the difference between distributions of molecular speed.

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Chapter 6, Problem 6.16VP

Interpretation Introduction

Interpretation: The given figure P6.15 shows the distribution of molecular speeds of CO2 at 25 °C . The curve for CO2 at −100 °C which shows the difference between distributions of molecular speed is to be explained.

Concept introduction: According to kinetic molecular theory postulates,

Particles present in the gas have consistent and random motion. They collide with each other or the walls of their container.

The average kinetic energy of every gas particles is directly related to temperature. The speed of gas molecules increases with increase in temperature.

Molecules having low molar mass will move faster than the molecules with high molar mass.

To determine: The curve for CO2 at −100 °C which shows the difference between distributions of molecular speed.

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