Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. a. 2-phenylacetaldehyde is soluble with concentrated sulfuric acid due to acid-base neutralization. b. 2-phenylacetic acid has a solubility classification of A2, which means it is soluble in 5.O%NaOH and insoluble in 5.O% NaHCO3. c. Scratching the inner sides of the beaker to begin recrystallization is advised for unsaturated solutions.
Lipids
The heterogeneous classes of organic compounds that are not water-soluble but are dissolved in organic solvents that are non-polar in nature are termed lipids. They are a long chain of fatty acids and esters of alcohols. Lipids are generally seen in several plants, microorganisms, and animals. They are utilized as insulation, components of the cell membrane, hormones, and molecules for the storage of energy.
Glycerophospholipid
Glycerophospholipid is the most abundantly occuring phospholipids found in the biological membranes. Lipids include a group of organic compounds like fats, hormones, oils, waxes, vitamins etc. They are non-polar molecules and are insoluble in water. Lipids play an important role in biological systems. They are the building blocks of our cell membranes, store energy and are involved in signaling.
Structure Of Camphor
A terpene with the molecular formula of C10H16O is a waxy, white color solid known as camphor. It is flammable. It also possesses a very pungent taste and a strong odor. There are various sources for extracting camphor from natural products such as the wood of the tree of camphor laurel. Sublimation of wood and steam distillation are some of the methods involved in obtaining camphor.
Glycolipid In Organic Chemistry
Glycolipids are lipids that are an important class of organic compounds in chemistry that have simple to complex applications. They contain carbohydrates, fatty acids, sphingolipids or a glycerol group. In other words, they are the modifications of lipids like acylglycerols, prenols and ceramides. They are all part of a wider group of compounds known as glycoconjugates.
Diterpenoid
The terpenoid class includes diterpenoids, which are chemical compounds with 20 carbon atoms. They are made up of four isoprene units and are derived from geranylgeraniol, a C20 precursor. They have a C20H32 basic structure. These characteristics distinguish diterpenoids from simple terpenes, which have just 10 carbon atoms.
Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true.
a. 2-phenylacetaldehyde is soluble with concentrated sulfuric acid due to acid-base neutralization.
b. 2-phenylacetic acid has a solubility classification of A2, which means it is soluble in 5.O%NaOH and insoluble in 5.O% NaHCO3.
c. Scratching the inner sides of the beaker to begin recrystallization is advised for unsaturated solutions.
d. Washing with hot solvent eliminates adhered mother liquor and avoids crystal dissolution.
e. To extract a nonpolar organic compound using solvent extraction, the extracting solvent must be nonpolar, and the washing solvent must be also nonpolar.
f. Addition of 6.0 M NaCl extracts saponins by converting them to their salt form.
g. The stationary phase in the paper chromatography experiment is the filter paper.
h. When the spots have low concentration, they will not be observed as visible spots in the chromatogram.
i. An isomer in anti-staggered conformation has higher potential energy than the isomer in eclipsed conformation.
j. The addition of excess HCl assures that the formation of tert-butyl chloride is favored.
k. If the temperature during distillation of crude tert-butyl chloride reached 90°C, the distillate would contain tert-butyl chloride and di-tert-butyl ether.
l. Addition of KMnO4 to 2,3-dihydroxycyclohexanone results in a purple solution.
m. 2-phenylhexanol will result in the formation of brown precipitate in neutral KMnO4 and homogenous solution in Lucas reagent.
n. A temperature-sensitive substance may be purified using steam distillation.
o. The formation of a sooty flame upon combustion of hydrocarbons indicates complete combustion which means that the sample has a high C to H ratio.
p. Halides make the
q. The rate-determining step in the mechanism of electrophilic aromatic substitution is the generation of a positively charged intermediate, the σ-complex, when an electrophile forms a bond to the ring.
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Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true.
d. Washing with hot solvent eliminates adhered mother liquor and avoids crystal dissolution.
e. To extract a nonpolar organic compound using solvent extraction, the extracting solvent must be nonpolar, and the washing solvent must be also nonpolar.
f. Addition of 6.0 M NaCl extracts saponins by converting them to their salt form.
g. The stationary phase in the paper chromatography experiment is the filter paper.
h. When the spots have low concentration, they will not be observed as visible spots in the chromatogram.
i. An isomer in anti-staggered conformation has higher potential energy than the isomer in eclipsed conformation.
j. The addition of excess HCl assures that the formation of tert-butyl chloride is favored.
k. If the temperature during distillation of crude tert-butyl chloride reached 90°C, the distillate would contain tert-butyl chloride and di-tert-butyl ether.
l. Addition of KMnO4 to 2,3-dihydroxycyclohexanone results in a purple solution.
m. 2-phenylhexanol will result in the formation of brown precipitate in neutral KMnO4 and homogenous solution in Lucas reagent.
n. A temperature-sensitive substance may be purified using steam distillation.
o. The formation of a sooty flame upon combustion of hydrocarbons indicates complete combustion which means that the sample has a high C to H ratio.
p. Halides make the
q. The rate-determining step in the mechanism of electrophilic aromatic substitution is the generation of a positively charged intermediate, the σ-complex, when an electrophile forms a bond to the ring.
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