The basic principle of a rotary evaporator is that it rapidly removes volatile solvents from a solution by... using reduced pressure to lower the solvent boiling points and make them evaporate faster   using extremely fast rotation to "spin" the solvent molecules out of the flask   using very high heat to quickly boil off solvent

Q: Supposed you are in a chemistry laboratory gave you a 500 ml Erlenmeyer flask containing 200 ml of…

A: As per the given data -  Mixture A contains NaCl solution whereas Mixture B contains the remaining…

Q: recrystallization, a pure substance

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

Q: If acetone is miscible with both water and xylene, then why can’t all three form a clear single…

A: "Like dissolves Like" which means polar solute dissolves in polar solvents and non- polar solute…

Q: When performing a distillation, the boiling point is measured: below the side arm of the distilling…

A:

Q: Why is methanol chosen as the solvent for recrystallization? A. Because it can easily be boiled…

A: Solvent used in recrystallization should have below properties: At high temperatures, it should be…

Q: What will be the conclusion to the experiment of solubility of the sugar is dissolved in normal…

A:

Q: In the process of a recrystallization, if crystals do not form upon cooling the solution, it is…

A:

Q: A glass plummet weighs 15 grams in air. When immersed in water, it weighs 8.5 g. When immersed in…

A: Given the mass of plummet in air, mair = 15 g  Mass of plummet in water, mwater = 8.5 g  Mass of…

Q: A. Critical point: 374 C, 218 atm. B. Liquid is more dense variation. C. Triple point: - 56.4 C,…

A: Colligative properties are the properties that depend on amount of substance but do not depend on…

Q: The presence of soluble impurities in a given substance A lowers the melting point of A because the…

A: The given statement is False as The presence of soluble impurities in a given substance A lowers the…

Q: i) What two criteria should you ensure about your melting point sample before you fill the melting…

A: Since you have posted multiple questions, but we will solve first question for you. For remaining…

Q: Re: recrystallization Before packing into a capillary tube, a solid substance has to be powdered.…

A: Watch glass

Q: The Dumas tube containing the volatile liquid vapor is removed from the boiling water bath and…

A: Dumas tube is used to determine the molar mass of the unknown liquid.

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: Describe how fractional distillation can better purify a mixture of liquids by discussing a liquid…

A: To achieve a desired degree of separation of a mixture of liquids, the general method involves…

Q: for liquid ethanol, list all of the intemolecular forces that have to be broken in order for it to…

A: all of the intemolecular forces in ethanol and biphenyl

Q: Recrystallization and Melting Points When performing recrystallization, it is imperative to cool…

A:

Q: Why can't a mixture of water and diethyl ether be used for recrystallization?

A: Recrystallization is used to purify the solute that can be dissolved in the given suitable solvent…

Q: Clearly explains how vapor pressure of water-eugenol system allows clove oil to be distilled

A: Simple distillation is the process in which two or more liquids are get separated with the simple…

Q: What are azeotropes, and how do they affect a distillation process? Azeotropic distillation is a…

A: In order to separate mixtures in a boiling liquid mixture, an approach called azeotropic…

Q: In order to obtain accurate data it is important to add hear slowly and steadily when the…

A: In order to obtain accurate data it is important to add heat slowly and steadily when the…

Q: Examine the above photo showing the four solvents and record your observations of the physical…

A: Given the picture of four solvents A, B, C, and D. Record your observations of the physical…

Q: What is the problem with using a solvent with a very high boiling point for recrystallization?

A:

Q: Why does the temperature not change while the pure cyclohexane is freezing? This question is based…

A: The molar mass of a solute can be determined by measuring the depression in the freezing point due…

Q: Phase Diagram for Solution Critical Point 217.75 (Critical pressure) Normal freening point 1.00 New…

A: normal boiling point is the temperature at which the vapour pressure is equal to 1 atm or 760 mmHg.…

Q: Graph of temperature versus fraction number for the distilled liquid and show the extrapolation of…

A: So, here, we need to plot the graph of temperature versus fraction number.

Q: Briefly explain how slow cooling contributes to the formation of pure crystals during…

A: Re-crystallization can be explained as the method which of purifying any impure compound in a…

Q: The position of the phases in the separatory funnel (whether the top or bottom phase) is dependent…

A: “Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: How can the temperature and the vapour pressure in a fractional distillation be effectively…

A: Fractional distillation is a distillation process used to separate the liquid mixtures using…

Q: Out of water, ethnaol, and pentane, i think pentane would be a good solvent at room temperature for…

A: The process which is used to purify the impure compound from a solvent is known as recrystallisation…

Q: Why is it important to perform a fractional distillation slowly? What happens if a fractional…

A: Fractional distillation

Q: What is the normal boiling point of this solvent?

A:

Q: Chromatography paper is fairly polar. How would you expect an ionic component to behave when the…

A: In a paper chromatography technique, as the solvent rises, the components adsorbed on the…

Q: Which of the following is/are TRUE about simple distillation technique? a. It is used to separate…

A: Distillation is a technique that is used to separate mixture of liquids depending upon the boiling…

Q: You are given an impure sample of fluorene. Your crystallization solvent choices are water, methyl…

A: Fluorene and toluene are quite non-polar, water is quite polar, and methyl alcohol is somewhere…

Q: How the concept of vapor pressures would differ between simple distillation and steam distillation…

A: The solution  of the question is given below:

Q: Constant-boiling mixtures that cannot be further purified by distillation, caused by intermolecular…

A: It's a azeotropic solution DEFINITION : it is mixture of two or more liquid whose proportion can not…

Q: In this lab, you used rotary evaporation to remove the neutral organic solvent. Rotary evaporation…

A: A rotary evaporator is a device used in chemical laboratories for the efficient and gentle removal…

Q: A mixture of phthalic anhydride and sodium sulfate was gently heated. After a while a web-like…

A: Given  Experiment  A mixture  of sodium sulfate and phthalic anhydride is gently heated. Observation…

Q: Impure acetanilide was dissolved in hot water. The solution was filtered hot and the beaker of…

A: Given, Impure acetanilide was dissolved in hot water. The solution was filtered hot and the beaker…

Q: Why do you think that the surrounding temperature of ice cubes is cold and has condensation? What…

A: The surrounding temperature of ice cubes is cold.

Q: Assume that your compound recrystallizes equally well from benzyl alcohol and isopropyl alcohol.…

A: Benzyl alcohol : C6H5CH2OH isopropyl alcohol : C3H8O

Q: 1. Assuming that sand and sodium chloride are the impurities in a sample of benzoic acid, state…

A: A mixture is a substance that is made up by mixing more than two compounds or substances together.…

Q: A student is trying to perform a single solvent recrystallization of compound X using methanol. He…

A: Ans.(i) Option (c) is right. No, you need a solvent which dissolves the sample only at boiling…

Q: Explain why one would recrystallize a solid from a solvent pair instead of a single solvent.…

A: Explain why one would recrystallize a solid from a solvent pair instead of a single solvent.…