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Is Chloroform a good solvent for recrystallization in acetanilide?
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Why is water a good solvent for the recrystallization of acetanilide?
Water is a good solvent for the recrystallization of acetanilide only at high temperatures. This process does not work at low temperature water. At high temperatures this is a good solvent because its polarity is neutral and the molecules are rapidly moving around.
Explain why during the recrystallization of p-dibromobenzene the turbidity of the hot solution was used as an indicator for the ratio of ethanol to water used?
ethanol alone is not a good solvent for this substance recrystallization and the compound has a very low solubility in hot or cold water.so ethanol and water are mixed together as solvent for crystallization of p-dibromobenzene that is soluble in the hot solvent mixed.so the turbidity of the hot solution shows the good mixture of ethanol and water as solvent.
Solvent for recrystallization?
A good solvent for recrystallization depends entirely on the polarity of the solid you're trying to purify. For example sodium chloride readily dissolves in water whereas naphthalene dissolves only in nonpolar solvents like hexane. To select a good solvent first consider the polarity of the compound of interest and pick a solvent that has the potential to dissolve it. Next suspend the solid in that solvent. You must pick another solvent if the solid completely dissolves in the selected solvent. Heat the mixture while stirring. If you reach the boiling point of the solvent and the compound hasn't dissolved, you must find a different solvent or add more of the solvent you are currently using. If your solid completely dissolves without too much of the chosen solvent, you have yourself a good solvent for recrystallization. To continue with the recrystallization simply allow the solvent to cool and your solid should precipitate out in the form of crystals. Put it in an ice bath to assist with the precipitation. The latter technique can lead to small crystals or powder. The best way to remedy this is to do a slow recrystallization. To do this you must use two solvents that will evaporate over a long period of time. One solvent must be very volatile and must be able to easily dissolve your compound at room temp. The other must be less volatile and your compound must be insoluble in this solvent. Note that this solvent must have the potential for dissolving the impurities in your compound. To perform the recrystallization, dissolve your compound in the "good" solvent and then add about the same amount of the "bad" solvent. Over a period of time, the "good" solvent should evaporate leaving your crystallized product in the "bad" solvent without any impurities.
What dissolves polycaprolactone?
THF, Chloroform, ethylacetate are good solvents for PCL.
How can Chloroform be bad and good for you?
It is not good for body. It can be bad if you get it as a anesthetic.
Why is water a good solvent for the crystallization for acetanilide?
It is most useful when crystals are being filtered out of a desired product. Why is water a good solvent for the recrystallization of acetanilide? Acetanilide readily dissolves in hot water, but is insoluble at low temps. Thus, it dissolves in hot water but crystalizes easily when cool.
Why is water a good solvent for the recrystallization of acetanilide?
Water is a good solvent for the recrystallization of acetanilide only at high temperatures. This process does not work at low temperature water. At high temperatures this is a good solvent because its polarity is neutral and the molecules are rapidly moving around.
What is a good solvent for recrystallization of sodium benzoate?
none at all. i tried everything.
Explain why during the recrystallization of p-dibromobenzene the turbidity of the hot solution was used as an indicator for the ratio of ethanol to water used?
ethanol alone is not a good solvent for this substance recrystallization and the compound has a very low solubility in hot or cold water.so ethanol and water are mixed together as solvent for crystallization of p-dibromobenzene that is soluble in the hot solvent mixed.so the turbidity of the hot solution shows the good mixture of ethanol and water as solvent.
Solvent for recrystallization?
A good solvent for recrystallization depends entirely on the polarity of the solid you're trying to purify. For example sodium chloride readily dissolves in water whereas naphthalene dissolves only in nonpolar solvents like hexane. To select a good solvent first consider the polarity of the compound of interest and pick a solvent that has the potential to dissolve it. Next suspend the solid in that solvent. You must pick another solvent if the solid completely dissolves in the selected solvent. Heat the mixture while stirring. If you reach the boiling point of the solvent and the compound hasn't dissolved, you must find a different solvent or add more of the solvent you are currently using. If your solid completely dissolves without too much of the chosen solvent, you have yourself a good solvent for recrystallization. To continue with the recrystallization simply allow the solvent to cool and your solid should precipitate out in the form of crystals. Put it in an ice bath to assist with the precipitation. The latter technique can lead to small crystals or powder. The best way to remedy this is to do a slow recrystallization. To do this you must use two solvents that will evaporate over a long period of time. One solvent must be very volatile and must be able to easily dissolve your compound at room temp. The other must be less volatile and your compound must be insoluble in this solvent. Note that this solvent must have the potential for dissolving the impurities in your compound. To perform the recrystallization, dissolve your compound in the "good" solvent and then add about the same amount of the "bad" solvent. Over a period of time, the "good" solvent should evaporate leaving your crystallized product in the "bad" solvent without any impurities.
Explain why crystallisation would not be suitable for purifying water?
An ideal crystallization solvent should be unreactive, inexpensive, and have low toxicity.It is also important that the solvent have relatively low boiling point as its best if the solvent readily evaporate from the solid once recovered.For most organic compounds, water is not a good recrystallization solvent.
What dissolves polycaprolactone?
THF, Chloroform, ethylacetate are good solvents for PCL.
How can Chloroform be bad and good for you?
It is not good for body. It can be bad if you get it as a anesthetic.
What are the criteria in choosing a good recrystallization solvent?
Dissolve the entire compound at the boiling point of the solvent.Dissolve very little or none of the compound when the solvent is at room temperature.Have different solubilities for the compound and the impuritiesHave a boiling point below the melting point of the compound so that the compound actually dissolves, not melts, in the hot solvent.Have a relatively low boiling point.
How made nacl?
A good method of refining NaCl is repeated crystallization/recrystallization.
How made pure salt?
A good method of refining NaCl is repeated crystallization/recrystallization.
Is chloroform toxic?
how can anything that makes me feel this good be bad for me.
