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Lol, I am also from U of A and was having problem with that xD Anway, here's the solution I found First of all, you add ether and acid layers (In my case, the ether is 2-methoxy-2-methylpropane and my acid is 5%HCl). Ether layer help dissolve neutral napthlanene and acid helps dissolve ethyl 4-aminobenzoate. Now separate two layers. Keep in mind that aquaous layer contains 4-aminobenzoate in ionic form and organic layer contains naphthalene. You then add excess base (10%NaOH in my case) to aquaous layer because at this point aqueous layer contains ethyl 4-aminobenzoate in of of ethyl 4-aminobenzoatehydrochloride (The structure is very similar to ethyl 4-aminobenzoate, except that it has H+ and Cl- ions attached to the component of "NH2", which makes it "NH3+Cl-" at that component). Once the layer has turned basic, ethyl 4-aminobenzoate will be isoloated out.
What else can I help you with?
How could you seperate benzophenone from a-naphthol?
The melting point for lauric acid is about 45 degrees while it is 121 degrees for naphthol. So, in a mixture repeated cycles of slow warming and cooling should separate out lauric acid from naphthol. You can improve the efficiency by adding a dash of slightly acidic 70% isopropyl alcohol. This will deprotonate the lauric acid while maintaining the proton on naphthol during this process to enhance separation and purification of the two compounds. You could also flat-out distill the two products by maintaining the temperature of the solution at the boiling point of lauric acid to separate it from naphthol.
What is the melting point of alpha naphthol?
The melting point of alpha naphthol is 95-96 oC.
What is the difference between alpha and beta naphthol?
alpha naphthol with CCl4(carbon tetrachloride) gives blue colour whereas beta naphthol with CCl4 gives no colour. that is the distinction test between alpha and beta naphthol.
What kind of compound is a-naphthol?
A-naphthol is a type of organic compound known as a naphthol, which is a phenol derivative. It consists of a naphthalene ring structure with a hydroxyl group attached at the alpha position. A-naphthol is commonly used in the production of dyes and pigments.
Why fructose give intense violet coloration with alpha naphthol in acidic media?
when it is kept in acid media,the acid hydrolyses the glycosidic bond and yields monosaccharide to give furfural and its derivatives ,these products when react with alpha naphthol (sulphonated) they give a purple complex
What is the resonance of alpha naphthol?
The resonance structure of α-naphthol involves delocalization of electrons within the aromatic ring through the oxygen atom. This results in stabilization of the molecule due to electron delocalization, making the compound more stable.
Why you dissolve absolute ethanol in 5 percent alpha naphthol for the Molisch test?
There is an answer in 'Related links', clickable just below this answer page [cf. Molisch's test for carbohydrates).But there is no conformation to use absolute alcohol (100%), neither of 5% a-naphtol.They use normal 96% alcohol and a-naphtol 2 g per 20 mL (=10%).The site is in German language, but you'll find an 'English language' link below the 'disclaimer'.
What are the reagents used in voges-proskauer tests?
The reagents commonly used in the Voges-Proskauer test are alpha-naphthol and 40% potassium hydroxide (KOH). These reagents are added to the bacterial culture after the addition of the Barritt's reagent (a mixture of 5% alpha-naphthol and 40% KOH) to detect the production of acetoin, which is indicative of certain bacterial species such as Enterobacter and Klebsiella.
Is benzophenone soluble in hexane?
Benzophenone is partially soluble in hexane. Benzophenone is polar, where as, hexane is nonpolar. "Like dissolves like."
What is the increasing polarity order of bi phenyl benzhydrol benzophenone?
From least to most polar: biphenyl >> benzophenone >> benzhydrol
What colors make naphtol?
Naphthol is typically produced as a red or yellow crystalline powder, depending on its chemical structure. The red form of naphthol is typically created from naphthol AS pigment, while the yellow form is produced from naphthol yellow dye.
How can you separate a mixture of acetone and a-naphthol?
1. Dissolve the mixture in water. Because naphtalene is very low soluble in water remain and NaCL is dissolved.Filter the liquid to obtain a water solution of NaCl. Heat to evaporate water and to obtain solid NaCl.Naphtalene remain on the filter.2. Heat the mixture over 220 0C; naphtalene will be evaporated.
