Which of the following form an ideal sơlution? I. Chloroethane and bromoethane II. Benzene and toluene III. n -hexane and n -heptane IV. Phenol and aniline

Step-by-step solution

Ideal solutions are the solutions which obey Raoult's law at all temperatures and pressures. The interactions of solute-solute, solvent-solvent and solute-solvent in these solutions are almost similar. No association/dissociation occurs in these solutions. Mixture of phenol and aniline shows negative deviation from ideal behaviour and forms an azeotropic mixture. The phenol-aniline interactions are stronger than phenol-phenol or aniline-aniline interactions. aligned & V_ mixing 0 aligned Hence, it does not form an