3) Explain in a few short sentences how IMFS, acid/base reactions, equilibrium, and thermodynamics come together to help to explain how ibuprofen can be separated from caffeine using an acid/base liquid/liquid extraction? N. HO
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- 4. Following from question 3, is it possible to separate aspirin from paracetamol using a liquid-liquid extraction method? How? Ans: From the given structures mentioned above it is clear that aspirin is a carboxylic acid (-COOH) while paracetamol is an amide (-CONH2). The mixture5. Give the definition of the inductive effect. What is the reason for its appearance in the molecule? Show the effect of the inductive effect in molecules: bromoethane CH3CH3B1; ethanol CH3CH2OH; fluoroethane CH3CH2F.How do you synthesize Chloramphenicol? Step by step please. (Drug Chemistry)
- 1. Define the term neurotransmitter, give structural formulas i\of three neurotransmitters in CNS. 2. Name the given substance. What pharmacological group does it belong to?. H3C NH 3. Write the metabolism of chlordiazepoxide , name all metabolites. 4. Write the synthesis of phenobarbital , give names to the initial and intermediate substances. 5. Write the equation for assay of acetylsalicylic acid substance_according to EP. Give the value of stoichiometric coefficient, formulas for the calculation of titre and percentage.What are the analyses or instruments that are used to verify or confirm if the extracted substance is indeed caffeine?Consider propanoic (CH3CH2CH2CO2H) acid and pentanoic (CH3CH2CH2CH2CO2H) acid and the corresponding alcohols with the same number of carbons, propanol (CH3CH2CH2COH) and pentanol (CH3CH2CH2CH2COH). Select the class of compound that is more soluble. {one answer] Select the best explanation for your answer to the previous question. [a second answer] Group of answer choices a. The solubility of alcohols in water decreases with increasing chain length. b. Propanoic acid and pentanoic acid are more soluble in water than the corresponding alcohol. c. Carboxylic acids are generally more soluble in water than alcohols of the same chain length because of increased hydrogen bonding with the -COOH functional group. d. Propanol and pentanol are more soluble in water than the corresponding carboxylic acid e. The solubility of carboxylic acids in water decreases with increasing chain length. f. Alcohols are generally more soluble in water than carboxylic acids of the same…
- Which of the following are typically included in a Pharmacopoeial monograph? I. Tests to confirm the identity of active pharmaceutical ingredients (API) II. Instructions on the preparation of dosage forms,e.g tablets and syrups. III) Tests to determine the levels of heavy metals in APIs A) I only B) II only C) III only D) 1 and II E) 1 and IIIBox the functional group/s that contribute to the solubility (hydrophilic and lipophilic) of the given organic molecules then check whether the drug molecule is hydrophilic or lipophilic.16. If all the N in 10.0 mmols urea, CO(NH2)2, is converted to NH4HSO4, and if with excess NaOH the NH3 is evolved and caught in 50.0 mL of HCl (1.00 mL ≈ 0.03000 g CaCO3), what volume of NaOH (1.00 mL ≈ 0.3465 g H2C2O4.2H2O) would be required for complete titration? 17. The percentage of protein in meat products is determined by multiplying the %N as determined by the kjeldahl method by the arbitrary factor 6.25. A sample of processed meat scrap weighing 2.000 g is digested with concd H2SO4 and Hg (catalyst) until the N present has been converted to NH4HSO4. This is treated with excess NaOH, and the liberated NH3 is caught in 50.0 mL pipetful H2SO4 (1.000 mL ≈ 0.01860 g Na2O). The excess acid requires 28.80 mL NaOH (1.000 mL ≈ 0.1266 g KHP). Calculate % protein in the meat scrap. 18. A 2.00 g sample of steel is burned in O2, and the evolved CO2 after passing through appropriate purifying trains is caught in 100 mL Ba(OH)2 solution. The supernatant liquid requires 75.0 mL HCl (1.00 mL…
- Waste vegetable oil (WVO; e. g. spent deep fryer oil) is often used to produce biodiesel. WVO tends to have relatively high amounts of free fatty acids (FFA) compared to unused vegetable oil. For a base catalyzed process, why might the presence of FFA cause problems? Provide a reaction scheme in your explanation.3. What were the structural features of the molecules that were soluble in aqueous bases (5% NaOH and 5% NaHCO3) and why do these features allow these molecules to dissolve in that solvent? 4. What were the structural features of the molecules that were soluble in aqueous acid (5% HCl) and why do these features allow these molecules to dissolve in that solvent? Solubility of Known Compounds Lab Known compounds: Glycerol, Sec-butanol, Naphthalene, Triphenyl methanol, Aniline, Benzoic Acid, Dioctyl Sebacate..What is the difference in the solubility of benzoic acid and sodium benzoate in water and explain which of them will be more soluble in chloroform.