Based on the nature of their intermolecular forces, which of the following liquid mixtures will cons — Solutions and Colligative Properties Chemistry Question
Question
Based on the nature of their intermolecular forces, which of the following liquid mixtures will consistently exhibit a positive deviation from Raoult's law?
Answer: A,B,D
💡 Solution & Explanation
Positive deviations occur when A-B forces are weaker than A-A/B-B forces. Adding non-polar cyclohexane to polar ethanol breaks ethanol's H-bonds. Adding non-polar $CS_2$ to polar acetone breaks dipole interactions. Adding $CCl_4$ to methanol breaks methanol's H-bonds. Benzene and toluene (C) form an ideal solution.
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