why would ethanol (solvent) be used in recrystalization?

Q: Why ethylene glycol is not categorized under glycol liquid desiccant?

A: There are two types of Glycol.They are  i-Ethylene Glycol  ii-Propylene Glycol

Q: What is the procedure of ethanol distillation from yeast sugar wash?

A: Ethanol is manufactured from molasses by the fermentation process. Fermentation is the process of…

Q: g) You have to wash the crystals with ice- cold solvent. Would you use ethanol as the washing…

A: The question is based on the concept of recrystallization technique. It involves  separating…

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: A) the possible methods to purify cyclohexene from cyclohexanol and other materials produced in the…

A: Purification of Cyclohexene from cyclohexanol  can be done via these following ways -  First one is…

Q: Consider the following three compounds: a. Which compound do you predict should be the most soluble…

A: We know that like dissolves like means polar solute dissolve in polar solvent whereas nonpolar…

Q: 1. Why is it that muriatic acid is packed in plastic container, while Acetone is usually in glass…

A: The reason why muriatic acid is plastic container while acetones are packed in glass bottles has to…

Q: Why should the spatula used for spooning solid chemicals from a reagent bottle be clean and dry?

A: If it is not clean and dry  ,you will contaminate the reagent. We were always taught to never to put…

Q: What specific impurities are removed by the ethanol and acetic acid in ethanol washes?  Explain

A: Ethanol washes means washing the end product with ethanol. This procedure removes the impurities…

Q: What  intermolecular force/s of attraction is not involved in producing a biodegradable plastic bag…

A: Bacterias in soil are responsible for the degradation of biodegradable plastic bags.

Q: Arrange the ff. into the correct order of recrystallization: a. prepare hot solution b. slow…

A: Concept - Recrystallization is a technique used to purify solid compounds. Solids tend to be more…

Q: What property is used to determinyif an organic solvent is above or below the aqueous layer when…

A: In the process of extraction, it is important to know whether the aqueous layer is below or above…

Q: Benzillic Acid Lab Q3. Cold water and ethanol was used to wash/rinse the collected solid during…

A: The rinse is to wash off impurities that adhere to the surface of the tetraphenylcyclopentadienone…

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

A: Watch glass

Q: 3.Why is it dangerous to perform distillation on a closed (airtight) system?

A: The process distillation involves the conversion of a liquid into vapour that is subsequently…

Q: Why do banana and apple show discoloration when it left out in the open air for some time?

A: We know that banana and apple show discoloration when it left out in the open air for some time, or…

Q: Measure 55 mL of 40% ethanol  Place 50 mL of ethanol in your distilling flask taking care that no…

A: The separation of mixtures of two liquids with different boiling points, such as alcohol and water…

Q: Filter paper should be moisten with water in preparation of spirit

A: False

Q: What is polymer condensation?

A: The word polymer means many units/parts. Polymer is defined as chemical substance of high molecular…

Q: Discuss how cotton fibers are formed.

A: Cotton fiber is a plant seed fiber that needs to be harvested and then separated from the seed.

Q: Whichof the following would not be a good solvent to use to extract a sample from water?   hexane…

A:

Q: Mixture 2: Cyclohexane and toluene Boiling point, Boiling point Type of Distillation you will use

A: The boiling point of the following mixture of compounds. Encircle which would boil first. Finally,…

Q: Would you expect polyester to be stabilized by hydrogen bonding? Explain.

A:

Q: How are the sulfonated polystyrene and quaternary ammoniated copolymer used for water purification?…

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

Q: Why should the heating of ammonium chloride be done inside a fume cover/hood?

A: A chemical fume hood is used to protect researchers working in a chemical laboratory from the…

Q: What type of distillation set up is in the picture? A Simple distillation Steam distillation

A: Given distillation set up,

Q: Many operations in the chemical laboratory use “salting out” in the procedure. What do the purpose…

A: We have find out the purpose of salting out technique in the chemical laboratory.

Q: How does the temperature during distillation compare to literature values for the product?

A: The temperature of the distillation head is related to the distilated product as follows.

Q: why is distillation an ideal choice to purify cyclohexene from cyclohexanol instead of other…

A: Distillation is used to separate a mixture when the boiling point difference between the…

Q: which of the following is strong adhesive: a  epoxy resin b  melamine-formaldehyde resin c  alkyde…

A: Adhesive:Any substance which is capable of holding materials together in a functional manner by…

Q: Some solids, in particular many amino acids, decompose upon melting. These compounds are often…

A: As the compounds decompose after heating up to a certain temperature, the molecules formed by…

Q: Mobile phase used in IEX can contain Organic solvent Water Salts Detergent

A:

Q: Recrystallization and Melting Points Why do you need to heat a sample slowly when taking a melting…

A: Interpretation: We need to tell why we heat sample slowly during determination of melting point.

Q: Briefly describe, using examples and sketches as appropriate, an experiment that illustrates how…

A:

Q: Name one hydrocolloid (from plant source )that can form gel on heating.

A: They are heterogeneous group with long chain of polymers. It is that type of property which form…

Q: What are the different phase changes involved in the purification using sublimation experiment?

A: Sublimation is a process in which solid is directly change into gaseous without changing in liquid…

Q: Why is it that muriatic acid is packed in plastic container, while Acetone is usually in glass…

A:

Q: Why do impure chemicals have lowering melting points? Can recrystallization be used to purify all…

A:

Q: Complete the table with required information as in other synthetic labs. Mostly it will be similar…

A:

Q: I. Moisture and heat labile reagents are preferred for dry granulations. II. Dry granulation…

A: 2) I. Blaud's pills are used medication for patients sufferingfrom anemia. I. Ferrous carbonate is…

Q: Poly(Vinyl Acetate) Briefly explain why Poly(Vinyl Acetate) is a synthetic polymer. Do not write…

A: Given explain why Poly(Vinyl Acetate) is a synthetic polymer

Q: Is water always used in steam distillation?

A: Organic compounds can be defined as compounds that contain hydrogen and carbon atoms.

Q: What information would you need in order to predict the best solvent for glue ?

A:

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.