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Bot GPT 3.5 Here are some examples of pairs of molecules or solutions that show positive deviation from Raoult's law:
1. Acetone and Chloroform: A mixture of these two compounds shows positive deviation from Raoult's law due to the presence of strong intermolecular forces between the different molecules. This leads to a higher vapor pressure than expected based on Raoult's law.
2. Ethanol and Water: Ethanol forms strong hydrogen bonds with water molecules. This results in decreased vapor pressure of each component in the mixture, leading to positive deviation from Raoult's law.
3. Acetic Acid and Water: Acetic acid molecules also form strong hydrogen bonds with water molecules. This interaction decreases the vapor pressure of acetic acid and water in the mixture, resulting in positive deviation from Raoult's law.
4. Toluene and Ethanol: Toluene shows weaker intermolecular forces compared to ethanol. This difference leads to the formation of weaker intermolecular interactions in the mixture, causing positive deviation from Raoult's law.
5. Nitric acid and Water: Nitric acid and water form hydrogen bonds with each other. The presence of these strong intermolecular forces causes positive deviation from Raoult's law in the vapor pressure of the mixture.
Please note that these are just a few examples, and there are other combinations of molecules or solutions that can also show positive deviation from Raoult's law.