Crystal seeding

Q: Why would a solvent with a very high boiling point be inappropriate for a recrystallization?…

A: There are some ideal conditions in selecting the solvent for crystallization. Among which the…

Q: 1. Sampling of solutions of approximately 5% is normally placed in a NaCl cell made up of metal…

A: Answer of above questions are  given below with explanation.

Q: In a fractional distillation experiment it is important to wrap insulting tape and Al foil around…

A: Wrap the distillation column with an insulated like Aluminium foil insulation bill aloud the vapour…

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: Suppose your sample is mixed with other stuff that is not soluble in your recrystallization solvent.…

A: Question : Suppose your sample is mixed with other stuff that is not soluble in your…

Q: At the beginning of a fractional distillation, the temperature of the vapor at the top of the…

A: I Assume it is option - 1st that is The approximate boiling point of the liquid in the vapor phase

Q: Why is water not a good recrystallization solvent for sodium benzoate? a. Sodium benzoate is…

A: Water is not a good recrystallization solvent for sodium benzoate.

Q: Explain and elaborat

A: Organic compounds when obtained from their natural sources or prepared in the laboratary are…

Q: 4. What is the proper way to heat a flammable solvent during recrystalliz a. Using a Bunsen burner…

A: The proper way to heat a flammable solvent during recrystallization is given below

Q: Suppose you have a mixture of saturated aqueous sodium chloride (brine) and your…

A: The substance whose density is high remain as bottom layer while with lesser density remain as top…

Q: Which of the following are favorable characteristics of an extraction solvent?  Circle all that…

A: We have been given five characteristics of an extraction solvent. We have been asked to choose the…

Q: Give IUPAC names for the following compounds. H3C CH3 2,3-dimethyl-1,3-cyclopentadiene CH₂CH₂CH3…

A:

Q: Chemistry why cant 99% ethanol be obtained from aqueous ethanol by simple distilation? Can it be…

A: The mixture of ethanol and water forms an azeotropic mixture, which is also known as a constant…

Q: 17. Which solvent mixture would be the most polar? a. 100% hexanes b. 90:10 hexanes/acetone c. 80:20…

A: The polarity of the mixture: Suppose a non-polar solvent is mixed with the polar solvent the…

Q: How was the precipitate obtained after filtration? a. By drying the precipitate on the filter paper…

A: The precipitate is obtained by drying the precipitate on the filter paper using a desiccator.

Q: During boiling point determination, the temperature of the vapors is being measured and not that of…

A: The concept behind the answer is that the boiling point of a liquid is the temperature at which its…

Q: Determine which solvent is best for distinguishing the following pairs of chemicals based on their…

A: In solubility case one have to recall one parameter that is polarity. And polar compounds always…

Q: Which of the following is true when preparing solutions? a. Make sure that the solvent and reagents…

A: A question based on analytical process. Four statements regarding solution preparation are…

Q: write an equation for this lab and explain the observations that would occur: measure out 10 mL…

A: We have to give the chemical equation for the given reaction as well as explanation.

Q: The compound above would be soluble in A. Water B. Hexane C. NaCl/water solution D. More than…

A: The given compound is anthracene.

Q: You've just synthesized a new molecule and need to purify it by recrystallization. You find that it…

A: Recrystallization is one of the purification method . Mostly used for purify solid organic…

Q: Briefly explain why crystals form as the solvent cools during recrystallization.

A: We use recrystallization to remove impurities / purification in organic chemistry . For this process…

Q: What should you do with the 5 mL portions of NaOH used to clean the buret? Discard into designed…

A: To clean the buret , 5 ml portion of NaOH is added . Then that NaOH solution is contaminated with…

Q: Explain and answer properly in recrystallization, after the crystals have formed (with cooling on…

A: Recrystallization  This method is important for the purification of the non volatile organic…

Q: You perform a recrystallization of biphenyl, but when you cool the solution, no crystals form. What…

A: The solubility of the compound depends upon the temperature of the solution and the concentration of…

Q: Which of the following should most greatly increase the rate of dissolution of an ionic salt in a…

A: Which of the following should most greatly increase the rate of dissolution of an ionic salt in a…

Q: Measure 0.400 g of KMNO. using a 50-mL beaker as the sample pan. Make sure to press the tare button…

A: Concentration of a solution is the indicator of amount of solute present per fixed amount of solvent…

Q: Which type of distillation set-up is appropriate for the given condition? Stable component of…

A:

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: What would be a good way to extract milkfat from your casein precipitate? (think: solvent polarity)

A: Polarity refers to the distribution of charge within a molecule or compound. It arises from…

Q: You have completed your recrystallization process, but you did not get any crystals back after you…

A: Recrystallization is a process which is used to purify the compounds. The principle behind…

Q: A sample of naphthalene is contamined with a small amount of anthracene. The melting point would be…

A: Melting point the temperature where the solid starts to melt. Melting point is measure in oC or oF.…

Q: Recrystallization and Melting Points Why do we perform recrystallization?

A: Pure substances have a sharp melting point and when impurities are present, they tend to change the…

Q: Why is it important to know if a substance is a molecular compound or an ionic compound before…

A: We have to discuss  the   importantance of   a molecular compound or an ionic compound for…

Q: How do you determine how much solvent to add during recrystallization? What happens if you add too…

A: In order to create a saturated solution, it's crucial to use the least amount of boiling solvent…

Q: Which of these solvent systems would cause a compound to elute from the column fastest (a,  b, or…

A: Column chromatography is a technique used for the purification of compounds. In this technique, a…

Q: After a recrystallization, a pure substance will ideally appear as a network of Choose. Choose... .…

A: A network of crystals having similar structure and size appeared during the recrystallization.

Q: 1. Flame Test Metal Barium chloride Calcium chloride Copper (II) sulfate Potassium chloride Sodium…

A: 1) The flame test is a qualitative test used to determine the identity of a metal or metal ion in an…

Q: 45). A student hopes to dissolve 0.900 g of Pbl2 in pure water to make 1 L of solution. Will all…

A: Since the solubility product of PbI2 = 9.8 X 10-9 at 25 oC And the solubility reaction of PbI2 is…

Q: 6. In a recrystallization, why is it important to dissolve the solute in boiling solvent instead of…

A: The correct answer is (a) To melt the solute.   In a recrystallization, the goal is to dissolve a…

Q: If we are recrystallizing a PURE compound, what will happen to the sample if we cool the solution…

A:

Q: Describe a procedure "fix" to solve the following recrystallization problems: A. No crystals are…

A:

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: Why do you need to swirl the flask constantly during the titrimetric analysis?   a. To prevent the…

A:

Types of Polymers on the basis of Method of Preparation