Consider a binary liquid mixture of carbon disulphide and acetone. Read the following statements regarding this mixture: I. The intermolecular A-B interactions are weaker than the A-A and B-B interactions. II. The mixing process is exothermic ( H_ mix III. The solution shows an increase in volume upon mixing ( V_ mix > 0 ). IV. The mixture can form a maximum boiling azeotrope. How many of the given statements are cor

Step-by-step solution

A mixture of carbon disulphide and acetone exhibits a positive deviation from Raoult's law. Statement I is correct: In solutions showing positive deviation, the solute-solvent (A-B) interactions are weaker than the solute-solute (A-A) and solvent-solvent (B-B) interactions. Statement II is incorrect: Because the new interactions are weaker, energy is required to break the stronger A-A and B-B interactions. This makes the mixing process endothermic, meaning H_ mix > 0 . Statement III is correct: The weaker A-B inter