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Which of the following forms an ideal solution? This question has multiple correct options

1. Acetone and phenol
2. Bromoethane and chloroethane
3. \( C C l_{4} \) and \( S i C l_{4} \)
4. Bromobenzene and Chlorobenzene

Correct answer: Bromoethane and chloroethane

Solution

Bromoethane and chloroethane are very similar in size, shape, and intermolecular interactions, so they mix with nearly no heat or volume change, which is the hallmark of an ideal solution. The other pairs have larger differences in polarity, hydrogen bonding, or molecular interactions.

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