Which of the following statements is false?
A. According to the Scatchard-Hildebrand approach, the larger the difference in the solubility parameters of the components in a mixture, the more non-ideal the mixture will behave.
B. Regular solution theory means that the excess molar volume and excess molar entropy of the system is zero.
C. To determine the solubility parameter of a substance, you need to know only the internal energy of vaporization for the substance.
D. The van Laar approach to predict mixture phase behavior is most valid for non-polar or slightly polar systems with small excess molar volumes.
E. All of the above are true.
A. Incorrect. This is true. The larger the difference, the larger the deviation from ideal solution behavior.
B. Incorrect. This is true. Regular solution theory is defined in section 11.8.1.
C. Correct. You also need to know the molar volume of the substance.
D. Incorrect. This is true. Predicting mixture phase behavior using van Laar works best when the substances adhere best to the assumptions of regular solution.
E. Incorrect. Only one of the above is true.
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