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The identity of the solvent that is used in recrystallization is very important because only if the correct solvent is used, will the product be purified and recrystallized as desired. The product, benzanilide, is soluble in hot ethanol, but not in cold ethanol. Any impurities that are expected to arise from the reaction are not soluble in hot ethanol and soluble in the cold ethanol, and thus it is the perfect solvent for the recrystallization process, as only benzanilide is soluble in it and when it is cooled only benzanilide will crystallize out, while any impurities will be left behind in the solution.
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∙ 11y ago
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∙ 11y agojhkghi
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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.
Why ethanol is the best solvent for recrystallization of urea?
because ethanol dissolve urea at slightly higher temperature and not dissolve the impurities
What is the procedure of recrystallisation of benzanilide?
using boiling water. benzanilide is insoluble.
How would you convert benzophenone into benzanilide?
benzophenone + NH3OHCl --> benzophenone oxime (+acid) ---> beckmann rearrangement --> benzanilide
When doing a solvent pair recrystallization which of the following pairs will work ethanol and water methylene chloride and water dimethylformamide and diethyl ether?
Definitely not methylene chloride and water as these are not miscible solvents.
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.
Why ethanol is the best solvent for recrystallization of urea?
because ethanol dissolve urea at slightly higher temperature and not dissolve the impurities
What is the procedure of recrystallisation of benzanilide?
using boiling water. benzanilide is insoluble.
How would you convert benzophenone into benzanilide?
benzophenone + NH3OHCl --> benzophenone oxime (+acid) ---> beckmann rearrangement --> benzanilide
What is the uses of Benzanilide?
it is used as an anti-atherosclerotic agent and also in the manufacture of dyes and perfumes.
Why is sodium chloride not suitable for recrystallization?
The crystallization/recrystallization of sodium chloride from water solutions is frequently used.
What is the reaction of benzoyl chloride with aniline?
benzanilide
What is used in alcohol- methanol or ethanol?
ethanol is used in alcohol
What process could be used to purify potassium chloride?
Crystallization/recrystallization process can be used.
When doing a solvent pair recrystallization which of the following pairs will work ethanol and water methylene chloride and water dimethylformamide and diethyl ether?
Definitely not methylene chloride and water as these are not miscible solvents.
What are the physical properties of Benzanilide?
One of the physical properties of Benzanilide is that its melting point is 163 Degrees Celsius. Its boiling point is 117 Degrees Celsius. Benzanilide is in the form of white crystals that are like needles.
What kind of alcohol is is used in beverages?
ethyl or ethanol
