Question:
Which of the following mixture form an ideal solution?
Which of the following mixture form an ideal solution?
Show Hint
Look for "twins"—molecules that are almost identical in shape and chemistry (e.g., Benzene/Toluene, n-Hexane/n-Heptane).
Updated On: May 12, 2026
- $CCl_{4} + C_{7}H_{8}$
- $CHCl_{3} + C_{6}H_{6}$
- $H_{2}O + CH_{3}OH$
- $n-C_{6}H_{14} + n-C_{7}H_{16}$
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The Correct Option is D
Solution and Explanation
Step 1: Concept
An ideal solution is one where the interactions between the different components (A-B) are nearly identical to the interactions between the like components (A-A and B-B).
Step 2: Meaning
Such solutions usually consist of components that have similar chemical structures, polarities, and molecular sizes. They obey Raoult's law over the entire range of concentration.
Step 3: Analysis * $CCl_{4} + C_{7}H_{8}$: Show non-ideal behavior due to different structures. * $CHCl_{3} + C_{6}H_{6}$: Shows negative deviation due to hydrogen bonding. * $H_{2}O + CH_{3}OH$: Shows positive deviation due to differences in hydrogen bonding strength. * $n-C_{6}H_{14}$ (n-hexane) and $n-C_{7}H_{16}$ (n-heptane): These are both non-polar alkanes with very similar structures and sizes.
Step 4: Conclusion
Because n-hexane and n-heptane are homologues with nearly identical intermolecular forces, they form a nearly perfect ideal solution. Final Answer: (D)
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