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The halogen that undergoes sublimation at room temperature is?
The halogen that undergoes sublimation at room temperature is iodine.
Which halogen sublimes to violet vapours?
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
What characteristics must a compound possess to be effectively purified by sublimation?
The only requirement is that the solid must have a slight vapor pressure under the applied conditions. Sublimation happens below triple point pressure.
When is purification by sublimation applicable?
purification by sublimation is applicable when the solid has a relatively high vapor pressure at temperature below its melting point. it is also applicable when the purity has a lower vapor pressure than the purified, and when a small quantity of the solid is used. this process can also be used when compounds display characteristic property of condensing the solid state without passing through the liquid state.
What purpose did the vacuum serve during the sublimation purification of caffeine?
it is used because some organic compounds do not sublime at atmospheric pressure so by using the vacuum it substantially reduces the pressure so that they can be purified by sublimation. it also makes decomposition and melting less likely to occur during the sublimation.
The halogen that undergoes sublimation at room temperature is?
The halogen that undergoes sublimation at room temperature is iodine.
Which halogen sublimes to violet vapours?
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
Why common salt cannot be purified by sublimation?
Because salt doesn't sublime !
Why common salt cannot purified by sublimation?
vapour pressure of common salt is higher... hence it cannot be sublimed...
What characteristics must a compound possess to be effectively purified by sublimation?
The only requirement is that the solid must have a slight vapor pressure under the applied conditions. Sublimation happens below triple point pressure.
When is purification by sublimation applicable?
purification by sublimation is applicable when the solid has a relatively high vapor pressure at temperature below its melting point. it is also applicable when the purity has a lower vapor pressure than the purified, and when a small quantity of the solid is used. this process can also be used when compounds display characteristic property of condensing the solid state without passing through the liquid state.
What purpose did the vacuum serve during the sublimation purification of caffeine?
it is used because some organic compounds do not sublime at atmospheric pressure so by using the vacuum it substantially reduces the pressure so that they can be purified by sublimation. it also makes decomposition and melting less likely to occur during the sublimation.
Is KCL and NaCl is separated by sublimation?
Sodium chloride is not purified by sublimation.
What compound can be used to demonstrate sublimation?
The compound in the mixture that is the sublimate would be whatever compound has passed directly from the solid to the gas phase without entering the liquid phase in between.
What is the process called when ice turns into water vapor?
I think the answer is sublimation
Does sublimation also mean turning from a gas straight to a solid?
The word 'sublimation' can be used two different ways in relation to gas/solid phase changes.1- Sublimation is the direct conversion of a solid to gas.The reverse process, gas to solid, is referred to as deposition.2- However, the term 'sublimation' is also used for a process for purifying a solid by heating it in an apparatus to make it turn into a gas (sublimation) and then cooling the gas back to a solid on a special cold surface (deposition). The impurities are left behind and the purified solid is gathered from the collecting area.The whole process is referred to as 'subliming' or 'sublimation', with the 'deposition' part just accepted as part of the process. This technique dates back to the alchemists.So sublimation can mean:-the change of a solid to gas or-a purifying process that features both sublimation and deposition.The term 'sublimation' is not used to mean a gas to solid change all by itself.
What is the name of a solid turning into a gas?
sublimationAnswersublimation AnswerSublimation Its Sublimation
