Question:
Which from following mixtures obeys Raoult's law?
Which from following mixtures obeys Raoult's law?
Show Hint
Homologous pairs (like $n$-hexane/$n$-heptane or Benzene/Toluene) usually form ideal solutions.
Updated On: Apr 30, 2026
- Phenol and aniline
- Chloroform and acetone
- Ethanol and acetone
- Benzene and toluene
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Raoult's law is obeyed by **Ideal Solutions**.
Step 2: Characteristics of Ideal Solutions
Components must have similar structures, polarities, and intermolecular forces ($A-A \approx B-B \approx A-B$).
Step 3: Analysis
- Benzene and Toluene are both non-polar hydrocarbons with very similar structures. - Phenol/Aniline and Chloroform/Acetone show negative deviation. - Ethanol/Acetone shows positive deviation.
Step 4: Conclusion
Benzene and Toluene form a nearly ideal solution and obey Raoult's law.
Final Answer:(D)
Raoult's law is obeyed by **Ideal Solutions**.
Step 2: Characteristics of Ideal Solutions
Components must have similar structures, polarities, and intermolecular forces ($A-A \approx B-B \approx A-B$).
Step 3: Analysis
- Benzene and Toluene are both non-polar hydrocarbons with very similar structures. - Phenol/Aniline and Chloroform/Acetone show negative deviation. - Ethanol/Acetone shows positive deviation.
Step 4: Conclusion
Benzene and Toluene form a nearly ideal solution and obey Raoult's law.
Final Answer:(D)
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