Interpretation:
The difference in the densities of liquid sulphur dioxide and gaseous sulphur dioxide has to be explained.
Explanation of Solution
The density of liquid sulphur dioxide is higher than that of gaseous sulphur dioxide because the intermolecular forces in liquid are stronger enough to hold molecule close together but small enough that the molecules can move about. The attractive forces are not strong enough to keep neighboring molecules in a fixed position and molecules are free and slide over each other.
In gases, the molecules are widely separated and the lack of any significant attractive force between molecules allows a gas to expand to fills its container. The kinetic energy of the molecules is greater than any attractive forces between the molecules.
The difference in strength of intermolecular forces of liquid and gaseous sulphur dioxide causes a huge difference in their densities.
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Chapter 11 Solutions
Chemistry: Principles and Practice
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