Describe the difference between an oil-in-water and a water-in-oil emulsion, and explain the use of the hydrophilic-lipophilic balance system to select an emulsifier.
Q: Discuss the structure of phospholipids. Explain the dependence of freezing (gel to liquid crystal…
A: Answer - phospholipids - Phospholipids, are a class of lipids whose molecule has a hydrophilic…
Q: What is the reason for extracting the organic layer with NaOH solution? Explain and write the…
A: Many extractions are performed using NaOH solutions as the miscibility and compatibility of the…
Q: 1.Describe other melting point apparatus that are available for routine analysis. 2. Explain the…
A: Melting point apparatus that are available for routine analyis:-
Q: In glucose estimation using Benedict's Reagent, briefly explain what would happen if the water…
A: In the quantitative estimation of glucose using the quantitative Benedict's reagent, the solution is…
Q: What qualitative test/s is/are needed to ascertain that there are no unreacted reactants present in…
A:
Q: 2. Among the three solvents used in the separation of pigments in spinach, which produced the most…
A: Separation of pigments in spinach, by chromatographic method.
Q: What information can GC provide? **Select ALL answers that apply** a. boiling point b. Rf c. ratio…
A: GC is referred to as gas chromatography and is an analytical technique which is used to separate…
Q: The Coca- cola is diluted and reacted with molybdate/metavanadate reagent before the %T is measured.…
A: Phosphoric acid (H3PO4) is used primarily in the manufacture of fertilizers, detergents and…
Q: Propose an experimental design on the separation of components of the mixture of o-nitrophenol and…
A:
Q: b. Can a mixture of d- and l-carvone be separated by column chromatography on silica gel using…
A: d-carvone and l-carvone are enantiomers of each other and are a class of monoterpenes found in…
Q: 0.100 g sample of phthalic acid was dissolved in 100 mL of water. When 25 ml of diethyl ether was…
A: Introduction- Solvent extraction is a process where 2 immiscible solvents are separated along with…
Q: Observations on the reaction of test samples with NaOH. Sample Observations +/- Acetamide Benzamide
A: Amides are condensation products of carboxylic acids and ammonia or its derivatives.
Q: Give an overview of transformation of benzoin to benzil. Why is pH control critical during benzoin…
A: the mechanism is as follows
Q: Briefly explain the rationale for the addition of 2N sulfuric acid in the assay of ascorbic acid.
A: Role of addition of 2N sulfuric acid in the assay of ascorbic acid explanation is given below.
Q: the reaction mixture containing p-aminophenol, distilled H2O, and acetic anhydride was heated to 200…
A: Ans At 100 °c your product is formed after you increase heat again and again then, up to 168 °c…
Q: oxidation
A: Filtration condition for the benzene derivatives for oxidation purpose is that the alkyl side chains…
Q: pon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: The components on the column moves opposite to that of chromatography paper. The spot of the most…
Q: Discuss what this data indicates about the polarity of Methyl-4-Aminobenzoate
A: Since you have asked multiple questions, we will solve first one for you. For remaining question,…
Q: What are the basic medium, acid medium, and zwitterion formulas of phenylalanine?
A: Phenyl alanine is an amino acid. Amino acid exist in three form depending upon the pH of solution.…
Q: Discuss the principles of the colorimetric and enzymatic methods for quantitating uric acid.
A: Generally there are two methods of quantitating uric acid . Colorimetric method Enzymetic method
Q: According to Marais et al. (2003), what are the advantages and precautions of using Ac-Di-Sol® as…
A: Ac-Di-sol, the best known superdisintegrant, is crosslinked sodium carboxymethylcellulose or…
Q: create a separations flow chart for Sb3+, Fe3+, Zn2+, Al3+, Cd2+ without using sulfides or…
A:
Q: 2.3 In an experiment the essential oils from herbs, were extracted with water. Explain how you will…
A: Answer - Liquid-liquid extraction - Liquid–liquid extraction, also known as solvent extraction and…
Q: Why does p-nitroacetanilide recrystilise in ethanol but o-acetanilide remains in the filter
A: Recrystalization of p-nitroacetanilide and O-acetanilide by using ethanol. p-nitroacetanilide can be…
Q: What are the chief differences between the Ninhydrin and Bradford assays for amino acid…
A: Ninhydrin and Bradford assay both are performed to determine amino acids. Nin hydrin reacts with…
Q: If you were given a soil sample to analyze for its levels of herbicide, 2,4-D, escribe how you would…
A: 2 4 dichlorophenoxyacetic acid , is a herbicide that's a serious threat to environment.
Q: Draw it with a flow chart and briefly explain the isolation method that can be used to separate…
A: Plant (or leave) extraction is an extraction method where certain chemical constituents present in…
Q: The following chromatogram was the output of the analysis of phytosterols in plants by gas…
A: The answer is as follows:
Q: Upon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: Thin layer chromatography is based on the separation principle. The separation lies on the affinity…
Q: evise an acid/base extraction method capable of separating Eugenol from affeine. The pKa of eugenol…
A:
Q: Which of the following would LOWER the purity of the distillate collected from the rubbing alcohol…
A: General chemistry
Q: Discuss if peroxide value is sufficient for measuring oil rancidity.
A: Answer - Rancidity - Rancidity, condition produced by aerial oxidation of unsaturated fat present in…
Q: purification of egg yolk vitelline 1) Measure the volumes of 3 egg yolks and mix by adding an equal…
A: The vitelline membrane is the transparent casing that encloses the yolk of the hen's egg and…
Q: Upon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: The thin layer chromatography can be described as the procedure that is used to the recognition of…
Q: According to the label, the commercial glass cleaner Windex contains 8 ingredients; however, upon GC…
A: The possible reason can be:
Q: pon screening with TLC (made of silica gel) chromatography using hexane/chloroform (3:1) as eluting…
A: The components on the chromatography paper moves according to their polarity. The spot of the most…
Q: The
A: Given: Data tabulation on Limonene (ug/ml) & Response of Detector is given Response…
Q: tautamerism
A: HYPERCONJUGATION It is transfer or we say delocalization of sigma electron. It is generally two…
Q: Which of the following is FALSE? a. In the extraction of caffeine, caffeine was dissolved in the…
A: To determine which of the following statement is FALSE a. In the extraction of caffeine, caffeine…
Q: what is The method that would be BEST to use to monitor protein secondary structure during the…
A: The secondary structure of the protein is affected by the complex folding properties of the protein…
Q: Why is dilute ethanol used as a slovent for the assay of salicylic acid?
A: Here we have to determine the reason of using dilute ethanol as a solvent for the assay of…
Q: What is the reaction methodology utilized by the reagent strip for detection of glucose in urine?
A: The measurement of the abnormality in the glucose level (generally high) of urine is done by the…
Q: 3 Draw a flow chart to shows the strategy for separation of three compounds: Phenanthrene and…
A: The three components can be separated by the principle of solubility of organic and ionic compounds.…
Q: Draw the molecular structure of glycerol-1-linolenate-2-palmitate-3-eliadate and calculate its…
A: Molecular structure of lipid is
Q: Among the three solvents used in the separation of spinach pigments which produced the most…
A: There are different types of pigments present in the green plants like spinach. Each pigment shows a…
Q: 1. What was the purpose of the concentrated sulfuric acid in the first step in the synthesis of…
A:
Q: What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol?…
A: The solution of the given question is
Describe the difference between an oil-in-water and a water-in-oil emulsion, and explain the use of the hydrophilic-lipophilic balance system to select an emulsifier.
Step by step
Solved in 2 steps
- Why does p-nitroacetanilide recrystilise in ethanol but o-acetanilide remains in the filter1. What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol? 2. Enumerate some pharmaceutical and medical uses of eugenol 3. What does the ferric chloride test identify? Is it specific test for eugenol? Why or why not?Account for the greater amount of internal pressure in the aspirin extraction versus the ß- naphthol extraction.Why does the sequence for extracting the diethyl ether solution of aspirin acid, naphthalene, and ß-naphthol start with aqueous bicarbonate and follow with aqueous hydroxide rather than the reverse order?
- According to Marais et al. (2003), what are the advantages and precautions of using Ac-Di-Sol® as disintegrant for furosemide tablets?For standard turbidity measurements, the increase in signalis due toa.) higher amounts of analytes that complex with formazin.b.) higher amounts of analytes that precipitate with formazin.c.) higher amounts of analytes that react with formazin.What is the purpose of adding sodium carbonate in the mixture of water and water- soluble components obtained from the solid-liquid extraction step of isolation of alkaloids from tea leaves? A.Increases the solubility of alkaloids in water thus ensuring maximum yield B.deprotonates tannins so that they will remain in the aqueous layer during liquid-liquid extraction C.'hydrolyses cellulose thus separating it along with other water-soluble components D.protonates the alkaloid to make the solution acidic
- What is the purpose of adding sodium sulfate to the organic layer after extraction? A. To remove water from the organic phase B. To act as a base to deprotonate the tannins, making them water soluble C. To act as a base to deprotonate the caffeine, making it water soluble D. To remove organic solvents from the aqueous phasein a liquid-liquid extraction, why is ethyl acetate a good initial solvent to dissolve a mixture of benzoic acid, 4-bromoacetophenone and ethyl 4-aminobenzoate? the extraction solvent is sodium bicarbonate.Discuss the principles of the colorimetric and enzymatic methods for quantitating uric acid.
- Provide or make a schematic diagram showing the EXTRACTION PROCESSES OF CAFFEINE. please follow instructions. Please note: extraction processes of caffeine only not extraction processes of caffeine from an instant CoffeeWrite the Method used in recrystallisation of benzoic acid, azobenzene, and p-nitroaniline.Based on the resulting chromatograms after visualization with iodine vapor, which between the solvent systems WHITE and MIX resulted in a more effective separation of the pigments of the indigo extract? Explain your answer in terms of the solvent that did not effectively separate the components of the root extract.
