What are the criteria for a good recrystallization solvent?

Q: Q1. Give three criteria for a good recrystallization solvent.

A: "Since you have asked multiple questions, I am solving the first one for you. If you need help with…

Q: What substance is used to help dry your sample rapidly?

A: The substances that rapidly absorb moisture from the surrounding atmosphere or dry it out are called…

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: After the drying step (with sodium sulfate), there was still water in the solution.  What should the…

A: Topic : use of drying agent (Ex - Sodium Sulfate)

Q: Explain the importance of the reagent strip to the laboratory

A: Reagent strip: It is a thin piece of paper or firm plastic strip which is saturated with chemicals…

Q: what is the difference between liquid phase extraction and solid phase extraction

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

Q: Please help me this question, thank you! "Why is using a drying agent a necessary step?"

A: Drying agent is an agent that has the property to absorb excess water or the traces of water and…

Q: 8. Why should you boil the sample solution right before reaching the end point?

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Q: What is the purpose of drying the remaining solid after extraction under a heat lamp?

A: The process, in which water and other solvent is evaporated from the solid-liquid mixture to form…

Q: Can you recrystallize these two components with 95% ethanol? Is it possible?   If so, make a flow…

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: Make a schematic diagram of the recrystallization procedure.

A:

Q: 10. Describe how you can decide whether your recrystallized trphenylmethanol is pure or not ?

A: Triphenylmethanol is an organic white crystalline compound. It is insoluble in water and petroleum…

Q: Why do we know the aqueous layer is the upper layer during the wash steps?

A:

Q: For either of these solvents explain why it would be a better choice as a recrystallization solvent…

A: Recrystallization is a technique used to purify compound. For recrystallization, dissolving both…

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

A:

Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…

A: Recrystallization is an experimental technique of separating pure compound from the solution…

Q: What are some advantages of the membrane filter technique in the analysis of a water sample? Some…

A:

Q: When you prepare your sample to run through the column chromatography , what is the first proper…

A: For the column chromatography the sample should be properly dissolved in an appropriate solvent

Q: Post-lab Questions: does this say about the purity of your solid?

A: Answer of 1st question as per guidelines can only answer 1 if you want to ask more send them one by…

Q: look for at least three extraction methods for perfumery materials.

A: There are several methods which are used for extraction of the perfumery materials from different…

Q: How are solvents chosen for recrystallization? (single solvent or mixed-solvent system).

A: "Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: At what step during the recrystallization would a soluble impurity be removed

A: Recrystallization :  It is a method in which solids are purified on the basis of their different…

Q: What should you do if there are insoluble impurities after heating up your sample in the…

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

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 was the solvent used in the preparation of the standard stock solutions? Water Methanol Mobile…

A: methanol

Q: Why use plastic reagent bottle for the storage of the standard NaOH solution instead of typical…

A: NaOH is a base. It is hygroscopic in nature. Hygroscopic means tends to absorb moisture from air.…

Q: Describe the basis of operation of the following separation methods.  i. Precipitation ii.…

A: Precipitation, distillation, extraction all are methods to separate components from it's mixture.…

Q: Describe how to create a 3.0 mL sample with concentration of 1.5 x 10-4 M from a starting stock…

A: Dilution Dilution process is the process to change (decrease) the concentration of solution in…

Q: In distillation 1. What is the reason for discouraging the formation of bubbles inside the…

A: Distillation is a method of separating components present in a liquid mixture based on difference in…

Q: molecules are

A:

Q: Why would it be possible to get less than 100% recovery for a recrystallization?

A: The question is based on the concept of recrystallization. recrystallization is a purification…

Q: What lab equipment is used to manually stir solutions? thermomoter

A: In chemical laboratory various equipments are used these equipments are called apparatus  In any…

Q: Draw an extraction flow chart for the extraction of a mixture of organic acid and phenol.

A: In this question we have been provided with a mixture of Organic acid and phenol, now we need to…

Q: Fill in the blanks: During the "salting-out" process in an extraction procedure, the replaces the

A: During Salting out during the extraction process there are certain proteins which are dissolved in…

Q: Write the Separation of heavy metals using solvent extraction technique.

A: Solvent extraction is an analytical method in which metals are separated based on their solubility…

Q: Classify these solvents as either protic or aprotic solvents.

A: A protic solvent is a compound containing at least one hydrogen atom bonded to anelectronegative…

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

A:

Q: 2.Explain how each type of impurity can be removed from the desired compound during…

A: Recrystalization is a convenient technique to purify organic compounds. Several steps are involved…

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: (extraction, reactive extraction, recrystallization). Write a few sentences for each technique…

A: Please find your solution below : Isolation of organic compound is a process in which individual…

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

A: The unknown solution contains liquid and impurities.

Q: write a stp by step procedure for the preperation of 500 mL of 0.350 M LiNO3 solution.

A: Since molar mass of LiNO3 = 69 g/mol And moles of LiNO3 = molarity X volume of solution in L Since…

Q: Why might it be necessary to employ procedures such as the use dilution and in-use tests?

A: Step :1  A use dilution test is the another method for testing the efficacy of the disinfectant.In…

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: Coarse Dispersion What will be the results after you reconstitued a cefixime 60 ml a powder for…

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