Which will from maximum boiling azeotrope ?
Which will from maximum boiling azeotrope ?
A
`C_(6)H_(6) + C_(6)H_(5)CH_(3) ` solution
B
`HNO_(3)+H_(2)O` solution
C
`C_(2)H_(5)OH+H_(2)O` solution
D
n- hexane and n-heptane
Text Solution
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The correct Answer is:
To determine which mixture forms a maximum boiling azeotrope, we need to understand the concept of azeotropes and the behavior of solutions in relation to Raoult's Law.
### Step-by-Step Solution:
1. **Understanding Azeotropes**:
- Azeotropes are mixtures of two or more liquids that boil at a constant temperature and maintain the same composition in both the liquid and vapor phases during boiling.
2. **Types of Azeotropes**:
- There are two types of azeotropes: maximum boiling azeotropes and minimum boiling azeotropes.
- Maximum boiling azeotropes occur when the solution exhibits negative deviations from Raoult's Law, meaning the vapor pressure of the solution is lower than expected.
3. **Negative Deviations from Raoult's Law**:
- In solutions showing negative deviations, the interactions between solute and solvent molecules are stronger than the interactions between the individual solute-solute and solvent-solvent molecules.
- This results in a decrease in vapor pressure and an increase in boiling point.
4. **Identifying the Correct Mixture**:
- Among the given options, we need to identify which mixture shows negative deviations and forms a maximum boiling azeotrope.
- For example, nitric acid (HNO3) and water form a maximum boiling azeotrope because the hydrogen bonding between nitric acid and water is stronger than the individual interactions.
5. **Conclusion**:
- The mixture that forms the maximum boiling azeotrope is HNO3 and water, which has a composition of approximately 68% nitric acid and 32% water, boiling at around 393.5 K.
### Final Answer:
- The mixture that forms the maximum boiling azeotrope is **HNO3 and water**.
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The solution which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azetropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. The boiling point of an azeotrope is never equal to the boiling points of any of the components of the azeotrope. Answer the following question: The azeotropic solutions of two miscible liquids
The solution which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azetropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. The boiling point of an azeotrope is never equal to the boiling points of any of the components of the azeotrope. Answer the following question: The azeotropic solutions of two miscible liquids The azeotropic mixture of water and HCl boils at 108.5^(@)C . This solution is
Knowledge Check
Assertion (A) : Solubility of a gas in a liquid is directly proportional to the pressure of the gas. Reason (R) : Solutions which show positive deviations from Raoult's law from maximum boiling azeotropes at a specific composition.
Assertion (A) : Solubility of a gas in a liquid is directly proportional to the pressure of the gas. Reason (R) : Solutions which show positive deviations from Raoult's law from maximum boiling azeotropes at a specific composition.
A
Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
B
Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
C
Assertion (A) is correct, but Reason (R) is incorrect statement.
D
Assertion (A) is incorrect, but Reason (R) is correct statement.
Assertion:The solutions which show large positive deviations from Raoult's law form maximum boiling azeotropes. Reason : 95% aqueous solution of ethanol is maximum boiling azeotrope
Assertion:The solutions which show large positive deviations from Raoult's law form maximum boiling azeotropes. Reason : 95% aqueous solution of ethanol is maximum boiling azeotrope
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion.
C
If assertion is true but reason is false
D
If both assertion and reason are false
The solution which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azetropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. The boiling point of an azeotrope is never equal to the boiling points of any of the components of the azeotrope. Answer the following question: The azeotropic solutions of two miscible liquids Which among the following combinations is a maximum boiling azeotrope?
The solution which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azetropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. The boiling point of an azeotrope is never equal to the boiling points of any of the components of the azeotrope. Answer the following question: The azeotropic solutions of two miscible liquids Which among the following combinations is a maximum boiling azeotrope?
A
`H_(2)O + CH_(3)OH`
B
`C Cl_(4) + CHCl_(3)`
C
`(CH_(3))_(2)CO + C_(2)H_(5)OH`
D
`H_(2)O + HNO_(3)`
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