Calculate the change in entropy when 10.0 g of CO2 isothermally expands from a volume of 6.15 L to 11.5 L. Assume that the gas behaves ideally.

The change in entropy of the carbon dioxide is kilojoules per Kelvin.

Explanation:

By assuming that carbon dioxide behaves ideally, the change in entropy (), measured in kilojoules per Kelvin, is defined by the following expression:

(1)

Where:

- Mass of the gas, measured in kilograms.

- Isochoric specific heat of the gas, measured in kilojoules per kilogram-Kelvin.

, - Initial and final temperatures of the gas, measured in Kelvin.

, - Initial and final volumes of the gas, measured in liters.

- Ideal gas constant, measured in kilopascal-cubic meter per kilomole-Kelvin.

- Molar mass, measured in kilograms per kilomole.

If we know that , , , , and , then the change in entropy of the carbon dioxide is:

The change in entropy of the carbon dioxide is kilojoules per Kelvin.

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