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Which of the following is not an example of an ideal solution?

Option: 1

Benzene and Toluene


Option: 2

Acetone and Chloroform


Option: 3

Nitric acid and Water


Option: 4

Ethanol and Methanol


Answers (1)

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Nitric acid and water form a non-ideal solution because they show a positive deviation from Raoult's law. The intermolecular forces between the molecules of nitric acid and water are different in nature and strength, leading to different vapor pressures. Therefore, when they are mixed, the vapor pressure of the resulting solution is not the sum of the vapor pressures of the individual components, as predicted by Raoult's law. In a non-ideal solution, the enthalpy of mixing is not zero, which means there is heat absorbed or released during the mixing process.

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Ritika Harsh

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