Classify these solvents as either protic or aprotic solvents.

Q: methyl alcohol and ethyl alcohol are poor extraction solvent. why?

A: Liquid–liquid extraction, also known as solvent extraction and partitioning, is a method to separate…

Q: Give at least three characteristics of chloroform that make it a good extracting solvent for the…

A: In nature alkaloids are found either as acidic salts or free bases.

Q: Classify attached solvent as protic or aprotic.

A: A protic solvent is a solvent that has a H atom attached to an oxygen, Nitrogen or fluoride.

Q: How to increase thw yield of steam distillation?

A: We have to write how to increase the yield of steam distillation.

Q: Prepare 500 mL of 10% formalin from commercial formaldehyde

A: Given Volume of Stock Solution = V1 Concentration of Stock = C1  Volume of Working Solution = V2…

Q: Classify attached solvent as protic or aprotic ?

A: Protic are the defined as the solvents in which the protons (hydrogen) are attached to the…

Q: What is the difference between the reaction of soap-water and synthetic detergent-water mixture to…

A: The composition of soaps is sodium stearate and composition of detergents is generally sodium…

Q: Which is the more effective extraction technique, single or multiple extractions? Explain.

A: Extraction is a process for separating chemicals based on differences in solubility in two…

Q: best method of preration of Alcohol

A: Alcohol can be prepared by various methods such as: a) Hydration of alkenes b)…

Q: Which of the ff. turbidity measurements is the most accurate? Angelo Secchi Disk Method Jackson…

A: Answer  All given method for turbidity measurement are correct

Q: Organic solids are best purified by a. recrystallization b. vacuum distillation c. fractional…

A: Purification of organic compounds can be done by various methods namely distillation method,…

Q: Prepare 250ml of 70% and 90% ethyl alcohol from 95% ethyl alcohol using the formula: C1V1=C2V2.

A: The concentration of a solution can be expressed in various units such as molarity, molality, m/v%,…

Q: If you are performing a solvent extraction using 1M NaHCO3 and Dichloromethane (Density = 1.325…

A: Solvent extraction is a process of separating the dissolved compound from one solvent by using…

Q: One of the following compounds cannot be used as a drying agent: Select one: O a. Na2SO4 O b. MgSO4…

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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: Describe the difference between protic and aprotic solvents. Provide an example of each to support…

A:

Q: Which of the following solvents will best dissolve wax,which is a complex mixture of compounds that…

A: The concept of solubility is based upon like dissolves like. Polar solvents dissolve polar solutes…

Q: how many hydrogen bond acceptors are there in pantoprazole?

A: If we consider any hydrogen bond, there consists a donor and an acceptor part. The donor part is the…

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: 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: Describe the procedure you would follow in removing the lower and the upper layers from a separatory…

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

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

A:

Q: 8 A solvent that does not dissolve your unknown once you bring the solvent to a boil is a good…

A: We know that, for recrystallization of unknown compound, selected appropriate solvent inwhich your…

Q: PhH (solvent)

A: This reaction is an example for (4+2) cyclo addition  It is thermally allowed reaction 2 C-C…

Q: Which of the ff. turbidity measurements is the least accurate? Secchi Disk Method Jackson Candle…

A: Answer  All given methods are used for measurement of turbidity

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 must the stopper be removed from the separatory funnel before the lower layer is removed?…

A: It is important during solvent extraction, to remove stopper before the removal of lower layer of…

Q: How does the analyzed vinegar sample conform with the FDA standards?

A: According to the Food and Drug Administration(FDA) standards, the minimum amount of acidity that a…

Q: how much diluent is needed to make a 1:2 dilution 50 ul sample

A: Diluent is a substance that is used to dilute the solution. Given information: 50 uL sample…

Q: Benzoyl Peroxide dissolve comidone or acne

A:

Q: Illustrate the process - Using a separatory funnel for extraction ?

A: Process of extraction using separatory funnel : a. Spot the separatory channel in an iron ring.…

Q: Are all organic solvents aprotic?

A: Aprotic means that the substance does not  possess any O-H or N-H bond in its structure.Basically it…

Q: What would be an appropriate shelf-life, t90, for this drug (in days) in this solution?

A:

Q: |CH,CH,l,Cu-Li THF solvent [+] DIBAL-H, cold THF solvent

A: These two reactions are quite efficient to provide ketone and aldehyde from their corresponding acid…

Q: What is Kemmerer water sampler

A: Kemmerer water sampler :- It is a device that makes it possible to obtain a sample of water from…

Q: 4. C4H;O2 DEPT CH, CH,t CHA proton decoupled solvent 200 160 120 80 40

A:

Q: Circle the upper layer in each pair of mixed solvents: water and benzene water and carbon…

A:

Q: Describe the errors which may cause an observed melting point range of a PURE sample to be: higher…

A: Ans 1)  If you used very large a sample size and  Using uncalibrated thermometer .  Packing a…

Q: What physical property determines which solvent sinks to the bottom when performing a liquid-liquid…

A: A separating funnel is used for carrying out liquid liquid extractions. When two liquids are shaken…

Q: You have 100 mL of solvent available to do an extraction. Which will give a better separation? O A.…

A:

Q: If 80% of a desired compound is extracted into the organic phase in each step (leaving 20% in the…

A: Given : 80 % of the desired compound gets extracted in each extraction leaving 20 % in the aqueous…

Q: 105 100 75 0 1 2 3 4 5 67 89 10 11 12 13 14 15 16 17 18 19 20 Volume distillate collected (mL) 1.…

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

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: You have 100 mL of solvent available to do an extraction. Which will give a better separation? a. 1…

A: The solvent extraction is more effective when the extraction is repeated with small amounts of…

Q: 1. Pure compounds have higher (and sharper) melting points than compounds that contain impurities.…

A: Melting point depends on the intermolecular forces of attraction to a greater extent. Pure crystal…

Q: The method of extraction for Roman chamomile is: Choose one answer. a. cold-press extraction b.…

A:

Q: Select the best solvent (only one) for the recrystallization of each compound (benzoic acid,…

A: Interpretation-  To select the best solvent (only one) for the recrystallization of each compound…

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: Caused by the severe dehydration effect of formaldehyde on tissue    A. fumigation    B.…

A: Caused by the severe dehydration effect of formaldehyde on tissue    A. fumigation    B.…