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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)


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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