Azeotropes
An azeotropic mixture of ethanol and water boils at:
Select the correct option:
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More solutions Practice Questions
A mixture of two miscible liquids that boils at a constant composition and temperature, lower than e...
A mixture of two miscible liquids that boils at a constant composition and temperature, lower than e...
Minimum boiling azeotrope shows which deviation?
Minimum boiling azeotrope shows which deviation?
For an ideal solution formed by mixing two liquids at constant temperature, which of the following s...
For an ideal solution formed by mixing two liquids at constant temperature, which of the following s...
For a solid solute dissolving in a liquid solvent, which of the following statements correctly descr...
For a solid solute dissolving in a liquid solvent, which of the following statements correctly descr...
What is the boiling point of a solution containing 6 g of a non-volatile, non-electrolyte solute dis...
What is the boiling point of a solution containing 6 g of a non-volatile, non-electrolyte solute dis...
Benzoic acid dissolved in benzene shows an abnormally high molar mass when measured by colligative p...
Benzoic acid dissolved in benzene shows an abnormally high molar mass when measured by colligative p...
An aqueous solution of an unknown non-electrolyte solute has a freezing point of −0.744°C. Given K_f...
An aqueous solution of an unknown non-electrolyte solute has a freezing point of −0.744°C. Given K_f...
A mixture contains 36 g of water and 92 g of ethanol (molar mass 46 g/mol). What is the mole fractio...
A mixture contains 36 g of water and 92 g of ethanol (molar mass 46 g/mol). What is the mole fractio...
The osmotic pressure of a 0.02 M solution of a non-electrolyte at 300 K is closest to which value? (...
The osmotic pressure of a 0.02 M solution of a non-electrolyte at 300 K is closest to which value? (...
Which of the following pairs of liquids is expected to show a positive deviation from Raoult's law a...
Which of the following pairs of liquids is expected to show a positive deviation from Raoult's law a...
A 0.01 M aqueous solution of AlCl₃ has an osmotic pressure of 0.0984 atm at 300 K. If complete disso...
A 0.01 M aqueous solution of AlCl₃ has an osmotic pressure of 0.0984 atm at 300 K. If complete disso...
Consider an ideal binary solution of liquids X and Y with vapour pressures P°_X = 600 mmHg and P°_Y ...
Consider an ideal binary solution of liquids X and Y with vapour pressures P°_X = 600 mmHg and P°_Y ...
About This Question
- Subject
- chemistry
- Chapter
- solutions
- Topic
- azeotropes
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
78.5°C (constant composition)
An Azeotrope is a 'constant boiling mixture' that has the same composition in the liquid and vapor phases.
- Ethanol and water form a Minimum Boiling Azeotrope at 95.6% ethanol and 4.4% water by mass.
- This mixture boils at 78.17∘C (often rounded to 78.5∘C), which is lower than the boiling points of both pure ethanol (78.3∘C) and pure water (100∘C). Because the composition does not change during boiling, they cannot be further separated by simple fractional distillation.
This medium difficulty chemistry question is from the chapter solutions, covering the topic of azeotropes. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse solutions questions on RankGuru.