Which of the following solvents is the best to use for recrystallization of Solute A? Hexane Ethyl Acetate Water Diethyl Ether

Q: Ten pints of a 5% solution are diluted with 30 pints of diluent, what is the percentage strength of…

A: Initial amount = 10 pints  Diluted by 30 pints.  So, final amount = 10+30 = 40 pints.  So, dilution…

Q: find the initial mole fraction and initial mass % of the solute (NaCl)

A: Mole fraction of NaCl = number of moles of NaCl/total moles  Number of moles = mass/molar mass  Mass…

Q: Explain different ways to induce recrystallization.

A: Recrystallization is a process in which the previously formed crystal were dissolved in a suitable…

Q: 2. You need to make 500mL of 7H9(+) media with 1X ADN and 30ug/ml. of the antibiotic kanamycin. Your…

A: A stock solution is a solution which is highly concentrated and it is diluted to prepare required…

Q: IL. Identify three ways in which you can reduce the amount of time reqaired to dissolve a given…

A: The maximum amount of solute that can be dissolved in the definite amount of solvent at a fixed…

Q: a. How does manipulating the temperature of the solvent help you determine the suitability for…

A: Here I am answering for  3 a. Part  Recrystallization is a purification technique that is used to…

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

A:

Q: You are to prepare each of the following 100-mL Test Reagents in the Laboratory with concentrations…

A:

Q: The question is:   A student preforms a crystallization on an impure sample of biphenyl. The sample…

A: Benzene is a very bad solvent to use to recrystallize biphenyl.If the solubility properties of two…

Q: or each solute, identify the better solvent: water or carbon tetrachloride. Water, H,O Carbon…

A: ANSWER : Water is a polar solvent. Carbon tetrachloride is a non-polar solvent. So, The suitable…

Q: Extraction is a process of purifying immiscible liquids. O TRUE FALSE

A: The purification of any two immiscible liquids can be carried out by a number of methods.

Q: Q2/prepare 500 ml, 5N H2SO4 solution from original concentrated solutic

A: Normality of original 98% concentrated H2SO4 = 36.8 N1 x V1 = N2 x V2

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: Calculate the molar mass of unknown that is nonvolatile and nonelectrolyte, which is dissolved 0.20g…

A: Mass of unknown = 0.20 gVolume of cyclohexane = 10 mLDensity of Cyclohexane = 0.779 g/mLMass of…

Q: 21. True/False: Recrystallization from a supersaturated solution is very slow. 22. Define the…

A: Supersaturated solution : A supersaturated solution is a solution which contains more than maximum…

Q: A 690 g of 59% strontium bromide solution is cooled from 60 oC to a certain temperature. Upon…

A: Given : Mass of solution = 690 g Mass of SrBr2 precipitated out on cooling producing saturated…

Q: 5. Assuming your solute has good solubility properties in your recrystallization solvent, what is a…

A: Every time it is not possible to attain 100% recovery in recrystallization. Sometimes some of the…

Q: How does the data display that water is a good solvent for recrystallization of benzoic acid?…

A: Temperature (C).    Solubility(g benzoic acid/L water) 0                                     1.7 25…

Q: Show how to take 3.6E-7 mol/L AgCl and convert it to g/100 mL

A: Given:  3.6 x 10-7 mol/L AgCl  To convert: 3.6 x 10-7 mol/L AgCl  to  g/100 mL AgCl conversion…

Q: Describe how you will prepare 600.0g of 0.250M NaCl soulution from solid NaCl and water as solvent

A: Given ->  Weight of NaCl = 600.0 gm Molarity of NaCl = 0.250 M

Q: Indicate which of the two filtration techniques, gravity ( G ) or vacuum ( V ), is suitable for each…

A: Given operations are  a) Hot filtration b) Removal of decolourising carbon  c) Isolation of…

Q: Prepare 83ml of a 68% (W/V) NaOH solution (Mr(NaOH) = 40.00). Round to 2 positions after the decimal…

A:

Q: State the purpose of impregnating the filter paper with colloidion solution.

A: The pore size of ordinary filter paper is higher than that of colloidal particle. Hence the ordinary…

Q: 5- Vacuum fractional distillation of crude oil, when performed, allows the distillation of the most…

A: Hii there, As there are multiple question posted. we are answering first question. If you need…

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: While performing a distillation to separate two liquids , a small fraction was collected at 70-73°C,…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the molalities of some commercial reagents from the following data: (Assume 100 g of…

A:

Q: find the initial mole fraction and initial mass % of the solute (sucrose)

A: Mole fraction of sucrose = number of moles of sucrose/total moles  Number of moles = mass/molar mass…

Q: the differences between a Stober procedure and a water/oil emulsion procedure

A: In this question we have to describe the differences between a stober procedure and a water oil…

Q: Which of the following will not have any effect on the solubility of a given solvent? capacity of…

A: Which of the following will not have any effect on the solubility of a given solvent?

Q: Describe exactly how to prepare a series of 8 solutions of a reagent with dilution factor of 2…

A: The chemical solutions are diluted by using below formula,

Q: ammonium solution

A: In aqueous solution, ammonia deprotonates a small fraction of the water to give ammonium and…

Q: * 100 mLOf approximately 0.2 M NAOH using Naoi (NaoH MA = 40 gimol) %3D Please recalculate the…

A: The concentration is defined as mass of solute present in per unit volume of solution.

Q: Suppose that you have a 1:1 mixture of compounds that is comprised of compound X and compound Y. You…

A: The amount of solute which can be dissolved in given amount of solvent is termed as its solubility.…

Q: Calculate the molality of a solution that is prepared by mixing 25.5 mL of CH3CH2OH (D = 0.789 g/mL)…

A: The mass of CH3CH2OH (solute) and the mass of CH3CH2CH2OH are determined as follows. mCH3CH2OH=0.789…

Q: Match the letters on the image with what they represent. TEMPERATURE- D B F QG Freezing point…

A: The answer is as follows:

Q: True or False: In this experiment, freezing point depression should be positive when the freezing…

A: The given expression is,                  ∆Tf  = f.p.pure solvent - f.p.solution Where, ∆Tf is the…

Q: What is the final molarity of sodium thiosulfate pentahydrate for each of the runs? Given: the…

A:

Q: Give a fundamental description of the recrystallization process. Explain why it is required and how…

A: Recrystalization is a purification technique not a separation technique.

Q: Arrange the boiling points of the aqueous solutions, relative to pure water. Assume complete…

A:

Q: What is the kinetic property observed in suspension? What is the optical property observed in…

A: It is a heterogeneous mixture of solid particle suspended in a solvent.  The solid particles are…

Q: How do we keep relative supersaturation low by controlling solute concentration?

A: ANSWER:-Option-3 is correct. 3.Concentration should be lower.

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

A: Benzyl alcohol : C6H5CH2OH isopropyl alcohol : C3H8O

Q: What is the mole fraction toluene in a solution made by dissolving 5.00 g of toluene (CZH8) in 39.0…

A:

Q: if i want to dilute 30 L ofa 1.5 M FeSO4 solution to a 0.3 M FeSO4 solution how much of the solvent…

A: Initial volume = 30 L  Initial molarity = 1.5 M  New molarity = 0.3 M  New volume = ?

Q: the solubility of any organic material in a given solvent is due to the intermolecular forces…

A: "Like dissolves like" is the thumb rule for dissolution of solute in solvent. This means that ionic…

Q: A B B S 1 You go to the lab to carry out an extraction. Solute A is the desired product How would…

A: The given options are,

Q: Explain why the presence of a non volatile solute in solution reduces the tendency of the solvent…

A: Nonvolatile term says that the solute itself has little tendency to evaporate. Since, some of the…