What are the benefits of using slightly more solvent than necessary when dissoving a compound for a recrystallization?

Q: What would likely happen if a hot saturated solution were filtered by vacuum filtration using a…

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Q: Write the principle behind the froth floatation process. What is the role of collectors in this…

A: Various processes are used for extraction of minerals. These minerals are very useful for…

Q: Will recrystallization work as a purification technique on all samples? If the sample contained more…

A: Recrystallization techniques works only on the solid samples which is used to purify them. This…

Q: Why should the recrystallization solvent have a fairly low boiling point?

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Q: if you isolate more than one crop of crystal what must you do before combining them. (related to…

A: A widely adopted method in purifying compounds is recrystallization. In this method, the pure…

Q: 5. Discuss how melting points of the impure sample and recrystallized sample could have been used to…

A: Melting point is the temperature at which there is a change from the solid to the liquid state i.e.…

Q: How does the volume of a solvent affect the purity of the material in recrystallization?

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Q: When finished performing a vacuum distillation it is important to?

A: Vaccum distillation is a type of distillation allows the purification of compounds not readily…

Q: Give some reasons that would lead you to purify a liquid by using vacuum distillation rather than by…

A: Distillation under reduced pressure is called vacuum distillation and is generally employed for…

Q: 5. Let's say naphthoic acid was isolated by vacuum filtration from our procedure explained in the…

A: Both methods are useful for removing moisture. Vaccum drying is most effective and gentle drying…

Q: is water a good solvent for recrystallization for acetanilide based on the image?

A: The answer is as follows:

Q: Why is recrystallization not applicable to samples which contain large amount of impurities?

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Q: What are the dispersed phase and dispersion medium in milk?

A: Dispersed Phase: The phase or particles which are present in the form of colloidal particles is…

Q: Why is the final product from recrystallization isolated by vacuum filtration and not by gravity…

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Q: Why is steam distillation and not fraction distillation used to extract limonene from citrus peels.

A: Steam distillation: It is a purifying technique which includes distilling of water with volatile and…

Q: How might cyclohexane give a false positive when choosing a solvent for recrystallization?

A: Melting point of cyclohexane = 6.47 oC   Cyclohexane is not soluble in solvent at high temperature,…

Q: While recrystallizing, what should you do if you have solid particles that don’t dissolve even after…

A: Recrystallization is the process by which non volatile organic solids are purified. In this method…

Q: Which method would be most appropriate for the purification of an off-color crystalline compound? A.…

A: Introduction: Purification is the process of obtaining pure compounds by removing unwanted…

Q: What are the criteria for a good recrystallization solvent?

A: Recrystallization refers to the phenomenon where solid compounds are purified. In the…

Q: Why do we use more than one solvent in the cold extraction method?

A: In chemistry like dissolves like

Q: Briefly describe on how peptization may occur during washing process of pure compound

A: Peptisation is the process of converting a precipitate into colliodal particles by adding an…

Q: Occasionally you will have solid impurities “trash” in your heated recrystallization solvent. How do…

A: The process used for the purification of organic compounds which are solids at room temperature is…

Q: Why is it necessary to allow enough time for your samples to dry?

A: during the organic synthesis, product may contain the impurity due the presence of the solvent

Q: Why do you have to keep all the equipment hot when removing carbon in recrystallization?

A: Recrystallization is technique used to purify solid compounds.

Q: What are emulsions? Why do they form during extractions? How is their formation minimized?

A: Emulsion is defined as the dispersion of one liquid in another liquid which are not miscible or it…

Q: Why is important to allow the saturated solution to cool down slowly during the recrystallization?

A: Recrystallization is most useful purification technique. It is used for purify solid compounds.

Q: After a recrystallization experiment, the crystals were dried very well. The melting point…

A: According to the question, after a recrystallization experiment, the crystals were dried very well.…

Q: In general describe how a mixed solvent recrystalization works.

A: To do a mixed solvent crystallization, dissolve the solid to be crystallized in the smallest amount…

Q: Why should the burette not be completely emptied when dispensing?

A: Since, burette is used for titration to determine strength of a solution.  We can take appropriate…

Q: At what step in the recrystallization process would a colored impurity be removed?

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Q: In an experiment the essential oils from herbs, were extracted with water. Explain how you will…

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Q: In liquid, extraction, why is it necessary to turn the separatory funnel upside down and to open the…

A: Liquid-liquid extraction is also called solvent extraction is a method of separating compound from…

Q: In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its…

A: In recrystallization, an impure solid compound is mixed with hot solvent to form a saturated…

Q: 1.What is the purpose of washing the recrystallized solid with solvent during the vacuum filtration…

A: A question based on purification, which is to be accomplished.

Q: why should a small volume of the cold solvent be used for rinsing the pure crystal?…

A: Using a cold solvent, the impurities present in the surface of pure crystal is removed by rinsing…

Q: Contrast the physical appearance of the crude material before the recrystallization and that of the…

A: A question based on re-crystallization, which is to be accomplished.

Q: Question: How to get rid of colored impurities in the recrystallization process? Explain that in…

A: Recrystallization is a chemical purification process. By dissolving all impurities and a compound in…

Q: for effective  purification by recrystalization while avoiding performing a hot gravity filtration,…

A: Recrystallization is used to purify a sample.

Q: Why should the washing solvent be cold in the suction filtration step?

A: Suction filtration is the final step for separating the compound from the solution during the…

Q: Why is it important to cool slowly during recrystallization

A: recrystallization is a process in which we dissolve an impure crystal in a solvent at high…

Q: After acid-base extraction why is it important to wash organic layer at least once with pure water?

A: A question based on quantitative analysis, which is to be accomplished.

Q: What is the use of the glass rod in transferring liquid reagents?

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Q: Explain the fuctions of each part of the reflux set-up

A: Reflux setup consist of three parts -- 1) A heating system 2) a round flask 3) a condenser.  It is a…

Q: What roles do solvent, density and polarity play in liquid/liquid extraction

A: i. Solvent =  In liquid - liquid extraction, the solvent which is needed to be extracted should not…

Q: Why is it required to add drying agent like sodium sulphate to the organic layer which may contain…

A: In an organic solution, there are often traces of water present because water is slightly soluble in…

Q: How to get maximum % recovery from recrystallization and crude weight

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Q: Why is it necessary to pulverize the sample in doing the experiment of melting point?

A: Pulverization: It is the process of grinding or crushing a solid substance in order to get a powder…

Q: An overachieving student determines that their neutral liquid unknown contains impurities. Suggest…

A: The unknown solution contains liquid and impurities.

Q: BRIEFLY explain why steam distillation can be used to purify or isolate temperature-sensitive…

A: A question based on analytical separation that is to be accomplished.

Q: What properties should ideally be possessed by a recrystallization solvent?

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Q: When steam distillation is not recommended? What is the theory of steam distillation technique?

A: There are various solutions which contains a lot of solvents which needs to be separated out from…

Q: Why is 95% alcohol a good solvent for extraction?

A: The substance which is present in lesser amount is termed as solute. The substance which is present…

Q: Describe the procedure of how to collect and dry your newly recrystallized compound.

A: Recrystallization is the method that is used to purify the organic compounds. It involves the…

Q: What do you think would happen to your recrystallization solution if you did not use a pre- heated…

A: Re-crystallization process is a process in which the compounds which are not soluble in cold solvent…

Q: why do we have to order samples (from least concentrated -most concentrated) when measuring the…

A: A question based on qualitative analysis, which is to be accomplished.