Which of the following concepts can be used to explain the difference in acidity between acetic acid (CH3COOH) ar ethanol (CH3CH2OH)? Multiple Choice Hybridization Electronegativity Resonance
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- Show how you would use extractions with a separatory funnel to separate a mixture of the following compounds: benzoicacid, phenol, benzyl alcohol, anilineDescribe the trends in the acidityand physical properties of carboxylicacids, and explain how their acidityvaries with their substituents.Write down the explicit structures of the compounds given below.a) 2-propanamineb) 1-N, N-dimethylaminocyclohexenec) etanoilbenzoatd) N-methyl-o-toluidinee) 3-Benzyl-5-ethylheptanoic acid
- A student was trying to determine the identity of an unknown compound. The melting point of the compound was 117-118oC. The student narrowed the possible compound down to the following: Compound Melting Point Range acetanilide 113-115oC fluorene 114-116oC mandelic acid 120-122oC Explain in detail how the student can experimentally determine and confirm the identity of their unknown.Give answers to these questions. Choose from the options A.The efficacy of salicylic acid as well as its solubility in water as compared to p-hydroxybenzoic acid is greatly affected by what phenomenon? Dipole moment Hydrogen bonding Ionic bonding Hydrophobic effect B.This is the most important CYP 450 isozyme that is responsible for the metabolism of almost 50% of the drugs available in the market CYP 2D6 CYP 2A9 CYP3A4 CYP 1A2 C.Ketones are oxidized into Aldehydes Carboxylic acid Secondary alcohol Unable to oxidized D.G- protein coupled receptors are activated via these secondary messengers, except cAMP DAG IP3 ATP E.The gas use for sterilizing heat labile substances Gluteraldehyde Ethylene oxide Nitrogen AcetyleneDefine the Mechanism - Conversion of Carboxylic Acids to Amides with DCC
- Picture 1 )Provide the functional group contained in each lettered compound: Choices:acid halidealcoholalcohol and ketoneamideanhydridecarboxylic acidesterketone Question 2 Indicate whether an acid–base reaction takes place under each of the conditions given. Choices yesno A: phenol + waterB: phenol + NaOH C: diethyl ether + NaOHD: ethanoic acid + NaHCO3E: ethanoic acid + NaOHF: Ethanoic acid + waterWrite the equilibrium-constant expressions and obtainnumerical values for each constant in. (a) the basic dissociation of aniline, C6H5NH2. (b) the acidic dissociation of hypochlorous acid,HClO. (c) the acidic dissociation of methyl ammoniumhydrochloride, CH3NH3Cl. (d) the basic dissociation of NaNO2. (e) the dissociation of H3AsO3to H3O+and AsO33-. (f) the reaction of C2O42-with H2O to give H2C2O4and OH-. show solutionif the pKa value for p-nitrophenol is 7.08, what fraction of it exists in its ionized form at (a) pH 7, and (b) pH 9?
- Place the binders below in descending order of acidity (pi) and justify your choice: CH3CN; (C2H5)2O; PCl3; As(C6H5)3; (C2H5)3Nuse your knowledge of acid-base extraction to come up with a plan to separate the following compounds from each other. Your plan should include specific solvents or reagents to be used and result in 4 isolated solids in the end. p-anisidine pyrene salicylic acid: 2,3-xylenol *Here is an hint and example: p=Anisidine is an amine, xylenol is a phenol, and salicylic acid has COOH and phenol groups. Always start with identifying the functional groups and you either add acids or bases to react then after you get your layer, you extract and normally you will get precipitation at the bottom and you collect it by vacuum iteration, solate the amine by extracting with HCl. The ammonium salt will be in the aqueous layer. Neutralize it by adding base (NaOH) until the solution is basic. Collect the amine(which we expect to precipitate) by vacuum filtration.1. outline a procedure for separating a mixture of naphthalene (a neutral compound), toluic acid (an acidic compound), and p-bromoaniline (a basic compound). Assume that toluic acid and p-bromoaniline are completely insoluble in water. 2. The solubility of Lorazepam (a tranquilizer found in Emotival , Lorax, Wypax, and other prescription medicines) is 0.08mg/mL and 2.62mg/mL, in water and chloroform, respectively. Estimate the partition coefficient of lorazepam between chloroform and water. 3. The solubility of benzoic acid at 25 degrees Celsius in water and diethyl ether is 3.35 mg/mL and 0.353 g/mL, respectively. Estimate the percent recovery of benzoic acid in the organic phase, if a solution of benzoic acid in water is extracted with an equivalent volume of ether. [HINT-pay attention to the units] 4. The solubilities of cholesterol in water and chloroform are 0.550mg/100mL and 1.00g/5.25mL, respectively. Estimate the partition coefficient of cholesterol between chloroform and…
