Sublimation
Easychemistry
Which mixture can be separated by sublimation?
Select the correct option:
Solution
Incorrect! Answer:
NH4Cl and NaCl
- Sublimation: The process where a solid changes directly into vapor on heating without passing through the liquid state.
- Principle: This method is used to separate a sublimable solid from a non-sublimable impurity.
- Substances: Common sublimable organic/inorganic substances include Camphor, Naphthalene, Iodine, Benzoic acid, and Ammonium Chloride (NH4Cl).
- Application: In a mixture of NH4Cl and NaCl (Common salt), NH4Cl will sublime and can be collected on a cold surface, while NaCl remains as a residue.
- Note: Sugar, KCl, and NaCl do not sublime; Toluene and Benzene are liquids.
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About This Question
- Subject
- chemistry
- Chapter
- purification techniques
- Topic
- sublimation
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
NH4Cl and NaCl
- Sublimation: The process where a solid changes directly into vapor on heating without passing through the liquid state.
- Principle: This method is used to separate a sublimable solid from a non-sublimable impurity.
- Substances: Common sublimable organic/inorganic substances include Camphor, Naphthalene, Iodine, Benzoic acid, and Ammonium Chloride (NH4Cl).
- Application: In a mixture of NH4Cl and NaCl (Common salt), NH4Cl will sublime and can be collected on a cold surface, while NaCl remains as a residue.
- Note: Sugar, KCl, and NaCl do not sublime; Toluene and Benzene are liquids.
This easy difficulty chemistry question is from the chapter purification techniques, covering the topic of sublimation. It appeared in the 2025 exam.
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