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    Kinetic Molecular Theory: Benzoic Acid

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    Benzoic acid, C6H5COOH, melts at 122 degrees C. The density in the liquid state at 130 degrees C is 1.08 g/cm^3. The density of solid benzoic acid at 15 degrees C is 1.266 g/cm^3.

    In which state is the average distance between molecules the greatest?
    Explain the difference in densities at the two temps in terms of the kinetic molecular theory.

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    Solution Preview

    The kinetic molecular theory states that the average kinetic energy of gas molecules is dependent on temperature. As temperature increases, the average kinetic energy increases. It also states that the ...

    Solution Summary

    The kinetic molecular theory is used to explain the difference in density between the phases of benzoic acid.