Q&A Hero

Chemistry

Q: What is the name of the structure formed when a soap coats an oily particle to make it water soluble? A) micelle B) cluster C) liposome D) dimer E) lipid
Q: Which part of a soap is responsible for its ability to dissolve fats and oily dirt? A) the hydrophilic end B) the hydrophobic end C) the carboxylate D) the ionized oxygen E) the carbonyl group
Q: What chemical process is responsible for the smell of vinegar in an old bottle of aspirin? A) reduction B) hydration C) hydrolysis D) esterification E) dissolution
Q: The reaction of an ester with NaOH is known as A) esterification. B) neutralization. C) saponification. D) reduction. E) oxidation.
Q: Which of the following is the reaction for the saponification of methyl acetate?
Q: Which of the following is the reaction for the acid hydrolysis of ethyl formate?
Q: The splitting apart of an ester in the presence of a strong acid and water is called A) hydrolysis. B) saponification. C) neutralization. D) esterification. E) reduction.
Q: From what component is the first part of the IUPAC name of an ester (such as methyl acetate) derived? A) the carboxylic acid B) the alcohol C) the ether D) the ester E) the amide
Q: Give the IUPAC name for the following compound. A) methyl formyl ether B) methyl methanoate C) methyl ethanoate D) methyl formate E) ethanoate
Q: Give the IUPAC name for the following compound. A) ethyl propyl ether B) ethyl propanoate C) ethyl butanoate D) hexanoic acid E) 4-hexanal
Q: What is the common name of this compound?A) ethyl methyl esterB) diethyl esterC) ethyl methanoateD) 2-ether-2-butanoneE) ethyl acetate
Q: Many of the fragrances of flowers and the flavors of fruits are due to A) ethers. B) carboxylic acids. C) esters. D) amines. E) amides.
Q: Derivatives of which aromatic carboxylic acid have been used as analgesics, antipyretics, and anti-inflammatory agents? A) benzoic acid B) anthranilic acid C) naphthenic acid D) p-toluenesulfonic acid E) salicylic acid
Q: What is the product of the reaction of an alcohol and a carboxylic acid when reacted together under acidic conditions? A) an ether B) an ester C) a salt D) a ketone E) an aldehyde
Q: The alcohol and carboxylic acid required to form propyl ethanoate are A) methanol and propionic acid. B) ethanol and propionic acid. C) propanol and propanoic acid. D) 1-propanol and ethanoic acid. E) 2-propanol and ethanoic acid.
Q: Which of these compounds is the ester formed from the reaction of acetic acid and 1-propanol?
Q: The reactants that will form an ester in the presence of an acid catalyst are A) two carboxylic acids. B) two alcohols. C) a carboxylic acid and an alcohol. D) an aldehyde and an alcohol. E) two aldehydes.
Q: This functional group is known as a(n)A) ester.B) carboxylic acid.C) alcohol.D) aldehyde.E) acetal.
Q: What is the product of the reaction of pentanoic acid with ethanol in the presence of a strong acid? A) pentyl ethanoate B) ethyl pentanoate C) pentyl acetate D) heptanoic acid
Q: Which compound below contains an ester functional group?
Q: Which of the following is the reaction for the neutralization of β-hydroxybutyric acid with NaOH?
Q: Which of the following compounds is most soluble in water?A) CH3 - CH2 - CH3B) CH3 - CH2 - CH2- O - CH3C) CH3 - CH2 - CH2- CH2 - OHD) E)
Q: The neutralization of formic acid by NaOH produces A) sodium formate as the only product. B) formate ion and hydronium ion. C) sodium formaldehyde. D) methyl alcohol. E) sodium formate and H2O.
Q: Which of the following is the reaction for the ionization of β-hydroxypropanoic acid in water?
Q: In water solution, how does dilute acetic acid behave? A) as a strong acid B) as a weak acid C) as a strong base D) as a weak base E) as a neutral compound
Q: When compared to sulfuric acid, how strong are carboxylic acids? A) stronger B) just as strong C) weaker D) not acidic at all
Q: Which of these is an acid formed in the citric acid cycle?A) acetic acidB) propionic acidC) -ketoglutaric acidD) benzoic acidE) palmitic acid
Q: What metabolic product of pyruvic acid is formed anaerobically during exercise?A) lactic acidB) citric acidC) malic acidD) acetic acidE) -ketoglutaric acid
Q: What common use is made of sodium propionate and sodium benzoate? A) flavor enhancer B) preservative C) pH adjuster D) disinfectant E) decongestant
Q: What is the common use of monosodium glutamate? A) as a preservative B) as a disinfectant C) as an anti-pyretic D) as a flavor enhancer E) as a spoilage inhibitor
Q: What happens to water solubility as chain length increases in carboxylic acids? A) It increases. B) It decreases. C) It stays the same.
Q: Why do carboxylic acids have higher boiling points than similar alcohols or aldehydes? A) They form dimers that are relatively stable. B) They are more water soluble. C) They have higher molecular weights. D) They have an additional oxygen atom. E) The carboxylic acid chain is not linear.
Q: What kind of intermolecular bonding occurs between carboxylic acids? A) ionic bonding B) nonpolar bonding C) covalent bonding D) hydrogen bonding E) charge-transfer bonding
Q: Which carboxylic acid in the list below is an aromatic carboxylic acid? A) acetic acid B) benzoic acid C) butyric acid D) benzene E) citric acid
Q: A carboxylic acid is named in the IUPAC system by replacing the -e in the name of the parent alkane with A) -oic acid. B) -oic. C) -carboxylic acid. D) acid. E) -oate.
Q: The structural formula of the carboxylic acid produced by the oxidation of 2,2-dimethyl-1-propanol is
Q: A carboxylic acid is prepared from an aldehyde by A) oxidation. B) reduction. C) hydrolysis. D) neutralization. E) hydrogenation.
Q: What is the method of preparing carboxylic acids from alcohols or aldehydes? A) reduction B) hydration C) oxidation D) saponification E) hydrolysis
Q: What -hydroxy acid is found predominantly in grapes?A) tartaric acidB) citric acidC) lactic acidD) glycolic acidE) benzoic acid
Q: What significant side effect is seen with -hydroxy acid use?A) UV sensitivityB) increased thirstC) nauseaD) increased susceptibility to infectionE) gastric irritation
Q: What therapeutic use is made of -hydroxy acids?A) ulcer treatmentB) fever reductionC) antibioticD) reduction of skin pigmentationE) sunscreen
Q: In the common naming convention for carboxylic acids, what is the correct Greek letter used for the carbon adjacent to the carboxyl group?A) B) C) D) E) µ
Q: Which organic acid accounts for the odor of rancid butter? A) propionic acid B) acetic acid C) formic acid D) butyric acid E) ethanoic acid
Q: What is the irritating acid found in ant and bee stings? A) acetic acid B) formic acid C) citric acid D) butyric acid E) stearic acid
Q: W hat is the common name for ethanoic acid? A) butyric acid B) formic acid C) citric acid D) stearic acid E) acetic acid
Q: What kind of taste do carboxylic acids have? A) sweet B) sour C) fruity D) slippery E) oily
Q: What is the IUPAC name for this compound?A) pentanoic acidB) 2-methylbutanoic acidC) 3-methylbutanoic acidD) 2-methyl butyric acidE) 2-methyl-4-butanoic acid
Q: What is the IUPAC name for this compound?A) pentanoic acidB) -methylbutanoic acidC) 3-methylbutanoic acidD) -methyl butyric acidE) 2-methyl-4-butanoic acid
Q: Which of these functional groups is likely to give a sour taste to a food? A) ester B) ether C) ketone D) carboxylic acid E) thiol
Q: The compound below is named A) benzoic acid amine. B) 3-aminobenzoic acid. C) 2-acid aniline. D) benzamide. E) 2-aminobenzoic acid.
Q: In the compound below, the hydroxyl group is in which position?A) 1B) 2C) 3D) 4E) 5
Q: What is the IUPAC name of the following compound? A) propyl butanoate B) butanoic acid C) 1-butanal D) 1-butanoate E) propyl methanoate
Q: What is the common name of the compound? isA) acetic acidB) propanoic acidC) propionic acidD) butanoic acidE) butyric acid
Q: Which of the following is found in vinegar? A) nitric acid B) formic acid C) acetic acid D) propionic acid E) butyric acid
Q: The functional group in acetic acid is called the A) hydroxyl group. B) aldehyde group. C) carbonyl group. D) carboxyl group. E) ester group.
Q: Which functional group is a carboxylic acid?
Q: Glycogen is a polysaccharide which hasA) only -1,4-bonds between glucose units.B) only -1,4-links bonds glucose units.C) both -1,4-and -1,4-bonds between glucose units.D) both -1,4-and -1,6-bonds between glucose units.E) carbon-carbon bonds joining glucose units.
Q: Amylopectin is a polysaccharide which hasA) only -1,4-bonds between glucose units.B) only -1,4-links bonds glucose units.C) both -1,4-and -1,4-bonds between glucose units.D) both -1,4-and -1,6-bonds between glucose units.E) carbon-carbon bonds joining glucose units.
Q: Under acid hydrolysis conditions, starch is converted to A) glucose. B) xylose. C) maltose. D) galactose. E) fructose.
Q: Humans cannot digest cellulose because theyA) lack the necessary enzymes to digest -glycosides.B) are allergic to -glycosides.C) are poisoned by -glycosides.D) have intestinal flora which use up -glycosides.E) cannot digest chlorophyll.
Q: Amylose is a polysaccharide which hasA) only -1,4-bonds between glucose units.B) only -1,4-links bonds glucose units.C) both -1,4-and -1,4-bonds between glucose units.D) hemiacetal links joining glucose units.E) carbon-carbon bonds joining glucose units.
Q: Cellulose is not digestible by humans because it contains glucose units linked by ________-glycosidic bonds.A) -1,2B) -1,4C) -1,6D) -1,2E) -1,4
Q: Which of the following contains -1,6-branches?A) amyloseB) glycogenC) celluloseD) sucroseE) maltose
Q: Maltose can be classified as a(n) A) disaccharide. B) polysaccharide. C) ketose. D) pentose. E) oligosaccharide.
Q: Galactose is a product of enzymatic hydrolysis of A) lactose. B) glucose. C) maltose. D) erythrose. E) sucrose.
Q: Maltose is a A) monosaccharide. B) disaccharide. C) trisaccharide. D) polysaccharide. E) phosphosaccharide.
Q: The disaccharide above contains a(n) ________-glycosidic linkage.A) -1,4B) -1,4C) -2,4D) -2,4E) -2,6
Q: Refer to the disaccharides below to answer the question that follow. Hydrolysis of the disaccharide above gives the monosaccharides A) fructose and ribose. B) fructose and galactose. C) ribose and glucose. D) ribose and galactose. E) fructose and lactose.
Q: Refer to the disaccharides below to answer the question that follow. In the figure above, the monosaccharide unit on the bottom is a(n) A) aldopentose. B) ketopentose. C) aldohexose. D) aldoheptose. E) ketohexose.
Q: Refer to the disaccharides below to answer the question that follow. In the figure above, the monosaccharide unit at the top is a(n) A) aldopentose. B) ketopentose. C) aldohexose. D) aldoheptose. E) ketohexose.
Q: Aspartame and Saccharin are two examples of A) disaccharides. B) polysaccharides. C) chlorosaccharides. D) alcohol sweeteners. E) noncarbohydrate sweeteners.
Q: Which sugar is NOT a reducing sugar? A) glucose B) fructose C) galactose D) maltose E) sucrose
Q: Which of the following contains a -1,4-glycosidic bond?A) galactoseB) lactoseC) maltoseD) sucroseE) amylose
Q: In a disaccharide, two monosaccharides are joined by what kind of bond? A) double B) anomeric C) alcohol D) glycosidic E) rotational
Q: A glycosidic bond between two monosaccharides can also be classified as a(n) A) double bond. B) ester bond. C) ether bond. D) achiral bond. E) alcohol bond.
Q: The oxidation of monosaccharides produces A) sugar alcohols. B) disaccharides. C) trisaccharides. D) sugar acids. E) polysaccharides.
Q: The reduction of monosaccharides produces A) sugar alcohols. B) disaccharides. C) trisaccharides. D) sugar acids. E) polysaccharides.
Q: The conversion between and anomers is calledA) oxidation.B) reduction.C) glycoside.D) mutarotation.E) hydrolysis.
Q: Mannose has the structure shown below. Which anomer is shown?A) the anomerB) the anomerC) the D anomerD) the L anomerE) none of the above
Q: Galactose has the structure shown below. Which anomer is shown?A) the anomerB) the anomerC) the D anomerD) the L anomerE) none of the above
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