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Naphthalene can be purified by sublimation due to its ability to transition directly from solid to gas without passing through a liquid phase. To perform the sublimation, heat the impure naphthalene in a controlled manner, allowing it to vaporize. The vapor then condenses on a cooler surface, typically a cold glass or metal surface, forming pure naphthalene crystals. This method effectively separates naphthalene from non-volatile impurities that do not sublimate.
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By which process can you separate a mixture of naphthalene and chalk powder?
Sublimation can be used to separate naphthalene from chalk powder. Naphthalene sublimes at room temperature, while chalk powder does not, allowing for the separation based on this difference in physical properties.
Can amixture of naphthalene and salt be separated by sublimation?
Yes, a mixture of naphthalene and salt can be separated by sublimation because naphthalene is a solid that sublimates at room temperature, while salt does not. When the mixture is heated gently, naphthalene will transition from a solid to a gas without becoming liquid, leaving the salt behind. The gas can then be cooled to re-condense naphthalene back into a solid form, effectively separating the two components.
What do you meant by sublimation also give example?
Sublimation is the process of direct transformation of a solid in a gas: examples are iodine, naphthalene, dry ice, camphor.
Why naphthalene undergoes sublimation but has melting point?
Naphthalene undergoes sublimation because it has weak intermolecular forces that allow it to transition directly from solid to gas phase without melting first. However, naphthalene can still have a melting point due to the presence of a crystal lattice structure that requires enough energy to break to form a liquid.
What is unusual about the phase change of naphthalene?
Naphthalene undergoes a unique phase change called sublimation, where it changes directly from a solid to a gas without passing through the liquid phase. This property makes naphthalene useful for applications such as mothball production and as a sublimation dye in the laboratory.
Can iodine and naphthalene be separated by sublimation?
Yes, iodine and naphthalene can be separated by sublimation because they have different sublimation points. Iodine sublimes at a lower temperature compared to naphthalene, allowing for the selective separation of the two substances based on their sublimation properties.
How do you separate naphthalene from sand?
One way to separate naphthalene from sand is by sublimation. By heating the mixture, the naphthalene will undergo sublimation, turning into a gas and leaving behind the sand. The gas can then be collected and cooled back into solid naphthalene.
By which process can you separate a mixture of naphthalene and chalk powder?
Sublimation can be used to separate naphthalene from chalk powder. Naphthalene sublimes at room temperature, while chalk powder does not, allowing for the separation based on this difference in physical properties.
How do naphthalene balls become smaller. name the process?
Naphthalene balls decrease in size due to sublimation, a process where the solid naphthalene directly transitions into a gas without passing through the liquid phase. This gradual transition causes the naphthalene balls to shrink over time.
Can you separate mixtures of ammonium chloride and naphthalene by sublimation?
yes but only by fractional sublimation (sublimating point of these substances are different)
How will you separate naphthalene from mixture of naphthalene and sodium chloride?
Naphthalene can be separated from sodium chloride by sublimation. When the mixture is heated, naphthalene will sublimate, turning from a solid to a gas, and can be collected separately from the solid sodium chloride.
To separate mixture of naphthalene and ammonium chloride by sublimation?
Sublimation is a process where a solid directly turns into a gas without going through the liquid stage. To separate naphthalene and ammonium chloride by sublimation, heat can be applied to turn naphthalene into a gas, leaving ammonium chloride behind as it does not sublimate. The gas can then be collected and cooled back into a solid.
What happens to the solid particles of naphthalene when heated?
When naphthalene is heated, the solid particles sublimate, meaning they change directly from a solid to a gas without passing through a liquid phase. This sublimation process causes the naphthalene to vaporize and release a characteristic odor.
What do you meant by sublimation also give example?
Sublimation is the process of direct transformation of a solid in a gas: examples are iodine, naphthalene, dry ice, camphor.
How can naphthalene be separated from a mixture of naphthalene and common salt.explain?
Naphthalene can be separated from common salt by sublimation since naphthalene sublimes at a lower temperature than common salt. By heating the mixture, naphthalene will turn directly from a solid to a gas, leaving behind the common salt as a solid residue. The naphthalene gas can then be cooled and collected back as a solid.
Why naphthalene undergoes sublimation but has melting point?
Naphthalene undergoes sublimation because it has weak intermolecular forces that allow it to transition directly from solid to gas phase without melting first. However, naphthalene can still have a melting point due to the presence of a crystal lattice structure that requires enough energy to break to form a liquid.
What is unusual about the phase change of naphthalene?
Naphthalene undergoes a unique phase change called sublimation, where it changes directly from a solid to a gas without passing through the liquid phase. This property makes naphthalene useful for applications such as mothball production and as a sublimation dye in the laboratory.
