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Why can't you use vacuum filtration for filtering a hot saturated solution?
Wiki User
∙ 13y ago
The lower pressure of the suction flask would cause the filtrate to boil. If this happened, the material in solution would be deposited over the walls of the flask.
(From Techniques and Experiments for Organic Chemistry by Addison Ault)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoUsing a vacuum filtration with a hot saturated solution will cause the filtrate to cool too fast and evaporate resulting in instant crystals that contain impurities.
Wiki User
∙ 13y agoA saturated solution (of anything) typically contains some undissolved crystals that could be filtered out, or allowed to settle.
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How are soluble impurities removed during a recrystallization?
Soluble impurities are removed by a process of vacuum filtration
Why the vanillin solution cooled in an ice bath before vacuum filtration?
it might be due to the fact that decrease in temperature result in precipitate formation. so if you cool it precipitates will form and ultimately you can easily separate out these precipitates using vaccum filteration
Which physical method can be used to separate naphthalene from sand?
By evaporation (under vacuum) of the naphtalene or filtration of the sand from this mixture
Why a vacuum filtration is avoided when crystals are isolated from a very volatile solvent?
This very volatile solvent will evaporate quickly.
What is vacuum distillation of sugar cane?
vaccumn distillation of sugar cane is similar to filtration in the sense it is passed through a boiler where vaccuming takes place
How are soluble impurities removed during a recrystallization?
Soluble impurities are removed by a process of vacuum filtration
In the isolation of aspirin why was vacuum filtration used instead of gravity filtration?
Vacuum filtration is far faster.
Why is vacuum filtration faster than gravity filtration?
Vacuum filtration is used instead of gravity filtration in order to achieve a dryer product in less time. The faster process of vacuum filtration allows the slurry to remain cold and in cases such as with benzoic acid more crytals will remain formed at colder temperatures. Gravity filtration is most useful when the solid is to be discarded and the filtrate (the liquid that flows through the filter paper) kept. Vacuum filtration is often faster than gravity filtration and is most useful if the solid must be kept or if a filtration must be done rapidly. A vacuum from an aspirator or a vacuum pump is used to pull the liquid through a funnel containing a piece of filter paper, while the solid is left on the paper.
Why is a hepa vacuum better than the other vacuums?
Hepa vacuums offer extra filtering so that allergens aren't released back into the air. Dyson is one of the top makers of vacuums that offer hepa filtration.
Would you recommend a suction filtration for a solution in which ether is the solvent?
no because it has a low boiling point so will evaporate in vacuum and dissolve the solid clogging the filter paper
What type of funnel will be used in the vacuum filtration step?
A Büchner funnel is adequate.
Is there a vacuum cleaner that helps to banish the bad, dusty smell that happens when you vacuum?
You need to get a vaccum with more suction and filtering capabilities.
How are vacuum cleaners and air conditioners related to filtration?
No idea thats why im asking!=.="
How do I remove Particles settle to bottom of pool that are too small for filtration to remove?
Vacuum them to waste
What is the difference between an oxygen vacuum and a regular vacuum?
The oxygen cannister has a higher filtration which is more expensive but great for your home,especially for allergy suffers etc.
What does a hepa vacuum cleaner sell for?
Hepa Vacuum Cleaner - the Kenmore Progressive Canister Vacuum Cleaner with HEPA Filtration sells for $299.99 at Sears. It has a three and one half star rating in its reviews.
Why the vanillin solution cooled in an ice bath before vacuum filtration?
it might be due to the fact that decrease in temperature result in precipitate formation. so if you cool it precipitates will form and ultimately you can easily separate out these precipitates using vaccum filteration
