Question:medium
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: May 16, 2026
- Phenol and aniline
- Chloroform and acetone
- Ethanol and acetone
- Benzene and toluene
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
Solutions that obey Raoult's law over the entire range of concentration are called ideal solutions.
Step 2: Detailed Explanation:
Ideal solutions are formed between components that have similar chemical structures and similar intermolecular forces.
- Phenol and aniline: Show negative deviation due to strong H-bonding between components.
- Chloroform and acetone: Show negative deviation due to H-bonding.
- Ethanol and acetone: Show positive deviation as acetone breaks the H-bonding of ethanol.
- Benzene and toluene: These are both non-polar hydrocarbons with very similar structures and London dispersion forces. They form a nearly ideal solution.
Step 3: Final Answer:
The mixture of Benzene and toluene obeys Raoult's law.
Solutions that obey Raoult's law over the entire range of concentration are called ideal solutions.
Step 2: Detailed Explanation:
Ideal solutions are formed between components that have similar chemical structures and similar intermolecular forces.
- Phenol and aniline: Show negative deviation due to strong H-bonding between components.
- Chloroform and acetone: Show negative deviation due to H-bonding.
- Ethanol and acetone: Show positive deviation as acetone breaks the H-bonding of ethanol.
- Benzene and toluene: These are both non-polar hydrocarbons with very similar structures and London dispersion forces. They form a nearly ideal solution.
Step 3: Final Answer:
The mixture of Benzene and toluene obeys Raoult's law.
Was this answer helpful?
0
Top Questions on Thermodynamics
- The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should have:
- JEE Main - 2025
- Physics
- Thermodynamics
- Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): With the increase in the pressure of an ideal gas, the volume falls off more rapidly in an isothermal process in comparison to the adiabatic process.
Reason (R): In an isothermal process, \( PV = \text{constant} \), while in an adiabatic process \( PV^\gamma = \text{constant} \). Here, \( \gamma \) is the ratio of specific heats, \( P \) is the pressure and \( V \) is the volume of the ideal gas.
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2025
- Physics
- Thermodynamics
- A poly-atomic molecule (C\(_3\)R, \(C_v = 4R\), where \(R\) is gas constant) goes from phase space point A (\(P_A = 10^4 \, \text{Pa}, V_A = 4 \times 10^{-3} \, \text{m}^3\)) to point B (\(P_B = 5 \times 10^4 \, \text{Pa}, V_B = 6 \times 10^{-7} \, \text{m}^3\)) to point C (\(P_C = 10^4 \, \text{Pa}, V_C = 8 \times 10^{-3} \, \text{m}^3\)). A to B is an adiabatic path and B to C is an isothermal path. The net heat absorbed per unit mole by the system is:
- JEE Main - 2025
- Physics
- Thermodynamics
- If \[ \text{C(diamond)} \rightarrow \text{C(graphite)} + X \, \text{kj mol}^{-1} \] \[ \text{C(diamond)} + \text{O}_2(g) \rightarrow \text{CO}(g) + Y \, \text{kj mol}^{-1} \] \[ \text{C(graphite)} + \text{O}_2(g) \rightarrow \text{CO}(g) + Z \, \text{kj mol}^{-1} \] At constant temperature. Then:
- JEE Main - 2025
- Chemistry
- Thermodynamics
- Want to practice more? Try solving extra ecology questions todayView All Questions