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When doing a solvent pair recrystallization which of the following pairs will work ethanol and water methylene chloride and water dimethylformamide and diethyl ether?
Ethanol and water is a suitable solvent pair for recrystallization. Methylene chloride and water, as well as dimethylformamide and diethyl ether, are not typically used together as solvent pairs for recrystallization due to their different chemical properties and solubility characteristics.
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.
Is Chloroform a good solvent for recrystallization in acetanilide?
Chloroform is not a commonly used solvent for recrystallization of acetanilide. It is more commonly used for dissolving non-polar or slightly polar compounds. In the case of acetanilide, solvents such as ethanol or ethyl acetate are often preferred for recrystallization.
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.
Is benzhydrol suitable for recrystallization of bezhydrol?
Yes, benzhydrol can be suitable for recrystallizing benzhydrol. Recrystallization is a common technique used to purify solid compounds by dissolving them in a suitable solvent and allowing them to slowly crystallize out. It is important to choose a solvent in which the compound is more soluble at high temperatures and less soluble at low temperatures to achieve successful recrystallization.
What is a good solvent for recrystallization of sodium benzoate?
A good solvent for recrystallization of sodium benzoate is water, as sodium benzoate is highly soluble in water. Additionally, ethanol can also be used as a co-solvent to enhance solubility and increase the purity of the recrystallized product.
When doing a solvent pair recrystallization which of the following pairs will work ethanol and water methylene chloride and water dimethylformamide and diethyl ether?
Ethanol and water is a suitable solvent pair for recrystallization. Methylene chloride and water, as well as dimethylformamide and diethyl ether, are not typically used together as solvent pairs for recrystallization due to their different chemical properties and solubility characteristics.
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.
How do you prevent immature recrystallization?
To prevent immature recrystallization, ensure that the solvent is added slowly to the solution during recrystallization, use a minimal amount of solvent, and employ a suitable solvent system based on the solubility of the compound. Additionally, controlling the rate of cooling during recrystallization can help prevent premature crystallization of impurities.
What is the recyrstallization solvent for benzocaine?
Common recrystallization solvents for benzocaine include ethanol and ethyl acetate. The choice of solvent will depend on the solubility of benzocaine in the solvent at different temperatures. It is recommended to perform a solubility test to determine the most suitable solvent for recrystallization.
Is Chloroform a good solvent for recrystallization in acetanilide?
Chloroform is not a commonly used solvent for recrystallization of acetanilide. It is more commonly used for dissolving non-polar or slightly polar compounds. In the case of acetanilide, solvents such as ethanol or ethyl acetate are often preferred for recrystallization.
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.
Is benzhydrol suitable for recrystallization of bezhydrol?
Yes, benzhydrol can be suitable for recrystallizing benzhydrol. Recrystallization is a common technique used to purify solid compounds by dissolving them in a suitable solvent and allowing them to slowly crystallize out. It is important to choose a solvent in which the compound is more soluble at high temperatures and less soluble at low temperatures to achieve successful recrystallization.
What solvent is used to recrystallize the salicylic acid?
Ethanol is commonly used as a solvent to recrystallize salicylic acid due to its ability to dissolve the compound at high temperatures and then allow for recrystallization as it cools.
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 are the characteristics that identify a good recrystallization solvent?
A good recrystallization solvent should have the following characteristics: high solubility for the compound being purified at high temperatures, low solubility at low temperatures to allow for crystal formation, non-reactive with the compound, and easily removable from the crystals after recrystallization.
Why are the collected crystals in a recrystallization process washed with cold water?
The collected crystals in a recrystallization process are washed with cold water to remove impurities and excess solvent without dissolving the desired crystals. Cold water helps to minimize the solubility of the crystals, allowing for a more effective purification process.
