A negative deviation from Raoult law is expected when

Question

Accepted Answer

B. {'text': 'A-B interactions are stronger than A-A and B-B', 'label': 'B'}

1. Non-ideal solutions can deviate from Raoult law positively or negatively.
2. Negative deviation happens when A-B intermolecular forces are STRONGER than A-A and B-B.
3. Stronger cross interactions reduce vapour pressure below the ideal prediction.
4. Example: HCl and water form a negatively deviating mixture (maximum boiling azeotrope).
_Source: NCERT Class 12 Chemistry, Unit 1 "Solutions", §1.5_

Answer

{'text': 'A-B interactions are weaker than A-A and B-B', 'label': 'A'}

Answer

{'text': 'A and B are chemically identical', 'label': 'C'}

Answer

{'text': 'A and B do not mix at all', 'label': 'D'}