Chemistry Exam > Chemistry Questions > The boiling point of an azeotropics mixture o...
Start Learning for Free
The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:
- a)The mixture will show negative deviation from Raoult’s law.
- b)The mixture will show positive deviation from Raoult’s law.
- c)The mixture will show no deviation from Raoult’s law.
- d)The mixture cannot be considered as true solution.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
The boiling point of an azeotropics mixture of water–ethanol is ...
Explanation:
Boiling Point of Azeotropics Mixture:
The boiling point of a liquid is the temperature at which its vapor pressure equals the atmospheric pressure. An azeotropic mixture is a mixture of two or more liquids that has a constant boiling point and composition.
Boiling Point of Water and Ethanol:
Water has a boiling point of 100°C, and ethanol has a boiling point of 78.4°C at atmospheric pressure.
Boiling Point of Azeotropics Mixture:
In the case of the azeotropic mixture of water and ethanol, the boiling point is lower than that of both water and ethanol. This means that the vapor pressure of the azeotropic mixture is higher than that of the individual components at the same temperature.
Deviation from Raoult's Law:
Raoult's law states that the vapor pressure of a component in an ideal mixture is equal to the product of its mole fraction in the mixture and its vapor pressure in the pure state. However, in the case of azeotropic mixtures, there is a deviation from Raoult's law.
Positive Deviation:
When the boiling point of an azeotropic mixture is lower than that of the individual components, it indicates a positive deviation from Raoult's law. This means that the vapor pressure of the components in the mixture is higher than predicted by Raoult's law.
Reason for Positive Deviation:
The positive deviation from Raoult's law in the azeotropic mixture of water and ethanol can be attributed to the formation of hydrogen bonds between water and ethanol molecules. These hydrogen bonds result in stronger intermolecular forces in the mixture compared to the individual components. As a result, the vapor pressure of the mixture is higher, and the boiling point is lower.
Implication:
The positive deviation from Raoult's law in the azeotropic mixture of water and ethanol implies that the mixture exhibits non-ideal behavior. The presence of hydrogen bonds between the molecules leads to a different behavior than predicted by Raoult's law.
Conclusion:
Therefore, the correct answer is option B: The mixture will show positive deviation from Raoult's law.
Boiling Point of Azeotropics Mixture:
The boiling point of a liquid is the temperature at which its vapor pressure equals the atmospheric pressure. An azeotropic mixture is a mixture of two or more liquids that has a constant boiling point and composition.
Boiling Point of Water and Ethanol:
Water has a boiling point of 100°C, and ethanol has a boiling point of 78.4°C at atmospheric pressure.
Boiling Point of Azeotropics Mixture:
In the case of the azeotropic mixture of water and ethanol, the boiling point is lower than that of both water and ethanol. This means that the vapor pressure of the azeotropic mixture is higher than that of the individual components at the same temperature.
Deviation from Raoult's Law:
Raoult's law states that the vapor pressure of a component in an ideal mixture is equal to the product of its mole fraction in the mixture and its vapor pressure in the pure state. However, in the case of azeotropic mixtures, there is a deviation from Raoult's law.
Positive Deviation:
When the boiling point of an azeotropic mixture is lower than that of the individual components, it indicates a positive deviation from Raoult's law. This means that the vapor pressure of the components in the mixture is higher than predicted by Raoult's law.
Reason for Positive Deviation:
The positive deviation from Raoult's law in the azeotropic mixture of water and ethanol can be attributed to the formation of hydrogen bonds between water and ethanol molecules. These hydrogen bonds result in stronger intermolecular forces in the mixture compared to the individual components. As a result, the vapor pressure of the mixture is higher, and the boiling point is lower.
Implication:
The positive deviation from Raoult's law in the azeotropic mixture of water and ethanol implies that the mixture exhibits non-ideal behavior. The presence of hydrogen bonds between the molecules leads to a different behavior than predicted by Raoult's law.
Conclusion:
Therefore, the correct answer is option B: The mixture will show positive deviation from Raoult's law.
|
Explore Courses for Chemistry exam
|
|
Similar Chemistry Doubts
The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer?
Question Description
The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer?.
The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer?.
Solutions for The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The boiling point of an azeotropics mixture of water–ethanol is less than that of both water and ethanol. Then:a)The mixture will show negative deviation from Raoult’s law.b)The mixture will show positive deviation from Raoult’s law.c)The mixture will show no deviation from Raoult’s law.d)The mixture cannot be considered as true solution.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup