Question

Which of the following is not an example of a non-ideal solution showing negative deviation?

• A. $HN{O}_3+$ Water
• B. $HCl$ + Water
• C. Acetic acid + Pyridine
• D. Carbon tetrachloride+Toluene

Answer 1

The correct option is D Carbon tetrachloride+Toluene

$HN{O}_3+\text{Water}$, $HCl+\text{water}$ and Acetic acid + Pyridine are non-ideal solution showing negative deviations.
Positive deviation:
Solvent-solute interaction is less than the solvent-solvent and the solute-solute interactions
Negative deviation:
Solvent-solute interaction is more than the solvent-solvent and the solute-solute interactions.
Carbon tetrachloride + Toluene is an example of non-ideal solution showing positive deviation.