0.750 g of crude acetylsalicylic acid is recrystallized using ethanol as the solvent. The solubility of acetylsalicylic acid in ethanol at 78 oC is 15.45 g per 100 mL.   a) How much hot ethanol is needed to dissolve the 0.750 g of acetylsalicylic acid?   b) If the solubility of acetylsalicylic acid at 25 oC is 0.100 g per 100 mL, how much acetylsalicylic acid will be obtained after crystallization in ethanol at 25 oC? Use the volume from part A. c) What is the maximum percent recovery for this re-crystallization

Q: Isoprenes and terpenes are classes of compounds given off by trees and plants. Near forests, these…

A: Given :- concentration of isoprene in the air at this location = 6 ppbv Henry constant, KH isoprene…

Q: An initial equilibrium mixture of methyl acetate, water and methyl alcohol contained 4.0 mL of…

A:

Q: Which of the following carboxylic adds will have the lowest pk,7 (which is the strongest acidn ÇI OH…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Mouthwash acts to clean and disinfect mouths. Two important considerations when designing a…

A: A buffer is a solution which resists any change in pH on adding a small amount of acid or base.It is…

Q: What trend of water solubility do you expect these following compounds to show? OH ot or cor OH HO…

A: Since you have posted multiple questions, we are entitled to answer the first only. 8) The compounds…

Q: O Ethylene glycol Glycerol O Amine 48. Fats and oils (desi ghee, vegetable ghee. and refined oil)…

A: Analytical chemistry is branch of chemistry in which we deal with group of cations and anions.

Q: Name Experiment 4-Prelab Assignment 1. A 0.219 g sample of an unknown organic acid was titrated with…

A: Since the organic acid has 2 monoacidic, -COOH groups, it is a diprotic acid(H2A).  Mass of the…

Q: Decide which compound in each pair is more soluble in hexane. or II .NH2 NH2 I or II or II

A: The solubility of a compound depends on the nature of the solute and the solvent. If the nature of…

Q: 2furoic adid isa white solid that follows this usual pattern as, 1 gram of 24uroic acid disolves in…

A: The experiment is based on the recrystallization of 2-furoic acid.

Q: possible errors that can lead to a difference between the theoretical concentration and actual…

A: There are many error  3 of them are  End Point Error The end point of a titration is when the…

Q: 1,2-Dichloroethane is a volatile organic compound that was once added to gasoline along with the…

A: A.    Let the concentration of 1,2-Dicholoroethane  = C mg/m3 the carcinogenic risk (R) = CDL ×SF…

Q: When you add HCl to a solution containing aqueous sodium acetylsalicylate (structure shown below), a…

A: Sodium acetylsalicylate is a conjugate base of weak acid acetylsalicylic acid.

Q: Starting a titration, the technician requires 200mL of a 0.22% (w/v) solution of citric acid,…

A:

Q: Put Yes for the components and NO if the component is not present. a1. NaOH a2. NaHCO3 a3. Na2CO3…

A: The solution is as follows:

Q: 24. Which of the following compounds will NOT give a positive iodoform test A) CI,CH,OH B) CH,CHO C)…

A: The compounds which have -COCH3(carbonyl) group in them give iodoform test. Ethanol also gives…

Q: for the binary mix ethanol/water the boiling point will be (when performing our disitllation) the…

A: The water and ethanol on mixing together forms non-ideal solution where ∆Vmixing is not equal to…

Q: During titration the following data were collected. A 25 mL poretion of an unknown acid soluation…

A: Acid-base titration: Titration is a method to determine the concentration of unknown acid by using…

Q: The Merck Index gives the following data for the solubility of 1 gram of salicylic acid and 1 gram…

A: GIVEN:-

Q: If 25.5 g of acetylene, C2H2 dissolves in 0.875 L of acetone at 1.00 atm pressure. The value for…

A:

Q: Q/ Why is iodine saturated with the least amount of sodium thiosulfate solution?

A: The elements are arranged based on their atomic number values in rows and columns (or groups). This…

Q: A cleaning product has 10.0 % oxalic acid (H2C2O4, pka1=1.42, pka2=4.4) as one of the ingredients.…

A: To find out the amount of a cleaning sample that must be used to titrate with 0.50 NaOH solution so…

Q: Solubility at 20° C (g/10 mL) 100°C (g/10 mL) Solubility at Compound Compound A 0.029 0.680 Compound…

A: Due to the following reason we can compare A and B which is pure.

Q: a. The chemical structures below show two analgesics (painkillers): acetaminophen and ibuprofen.…

A: Organic compounds have various ionizable groups such as phenol, carboxylic acid, amines etc. These…

Q: A 7.5 ml sample required 28.5 ml of a 0.15 M sodium hydroxide solution to titrate to endpoint. a.…

A: Given, Volume of sample = 7.5 ml Volume of NaOH = 28.5 ml Molarity of NaOH = 0.15 M weight of acetic…

Q: A scientist isolates an unknown organic acid through a series of experiments and intends to…

A: Answer:- This question is answered by using the simple concept of chemical reactions of acids with…

Q: What is true about the solubility of methyl benzoate and the ion of benzoic acid (benzoate ion)?…

A:

Q: Solid-liquid extraction is an effective method to isolate a the desired soluble component in a solid…

A: Solid-liquid extraction is an effective method to isolate a the desired soluble component in a solid…

Q: Which compound in each pair is more soluble in hexane? он (a) or II (b) or II NH2 (c) or II

A: Hexane is a non polar compound, so the compound which is less polar would be more soluble in hexane.…

Q: If 15.2 pg of water is dissociated from lithium carbonate pentahydrate, what amount of lithium…

A:

Q: Compute the amount of reagents which will be used for the preparation of the following reagents and…

A: A question about preparation of laboratory reagent, which is to be accomplished.

Q: A 1.00 liter solution contains 0.31 M ammonia and 0.40 M ammonium perchlorate. If 0.200 moles of…

A: Answer :---  Given :--  The balanced chemical equation for the reaction between potassium hydroxide…

Q: Is triethylamine soluble in water? Is triethylamine soluble when Hcl is added to it? Please explain…

A: Given question related to solubility of triethyl amine in water.

Q: Ethanol is needed as solvent when preparing phenolphthalein color indicator in volumetric…

A: Ethanol - class of alcohol containing 2 carbons and 1 alcoholic group and it is a industrial…

Q: For your fine titrations, after reaching the x-1 mL mark from your rough titration, you should add…

A: The question is based on the concept of titrations. We need to identify whether given statement is…

Q: In ending the titration of KHP, you leave a half-drop of the NaOH hanging from the tip of the buret.…

A: Let's assume after Standardization of NaOH by KHP, the estimated %CH3COOH with standard NaOH.  The…

Q: Determine if the following compounds should be very soluble, slightly soluble, or insoluble in water…

A: Solubility refers to the ability of a substance (solute) to dissolve in a solvent (usually water) to…

Q: How do you determine which salts have a higher vs lower solubility when given Ksp? This is one of my…

A: Determine which having higher solubility --

Q: What is the percentage of total acid expressed as acetic acid in a sample of vinegar if 4.0g of…

A: A multiple choice question based on acid-base titration that is to be accomplished.

Q: Some compounds are more familiarly called by their common names. For example, limewater is Ca H2O. *…

A:

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.