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CARBOXYLIC ACIDS
68問 • 8ヶ月前
  • HERSHEY VALERIE BERNARDINO
    • 通報

    問題一覧

  • 1

    Organic compounds containing a carboxyl (R-COOH) functional group

    carboxylic acid

  • 2

    Occur widely in nature, often combined with other functional groups, just like in fats, oils, and waxes

    carboxylic acid

  • 3

    An important components of many food and medicines, best known in their common names based on Latin and Greek words describing their sources

    carboxylic acid

  • 4

    Carvoxylic acid contains an _____ group (RCO-) with a hydroxyl group attached to it

    acyl

  • 5

    Carboxylic acid other functional groups could be attached to the acyl group through _____ substitution reaction, replacing the hydroxyl group with subtituents such as halo, alkoxyl, amino, and acyloxy

    nucleophilc

  • 6

    The most common reaction to synthesize carboxylic acids is through the _____ of primary alcohols using potassium dichromate or potassium permanganate

    oxidation

  • 7

    Chemical process of carboxylic acids occurs biologically in the liver on _____ metabolism

    ethanol

  • 8

    Ethanol is metabolized into _____ through an enzyme known as alcohol dehydrogenase, a process that can also occur through CYP450 enzyme

    acetaldehyde

  • 9

    Acetaldehyde is further metabolized into _____ acid through an enzyme known as aldehyde dehydrogenase

    acetic

  • 10

    The acetate metabolite is a more excretable form of metabolism of carboxylic acid

    True

  • 11

    A process of ethanol that prevents the accumulation of the toxic acetaldehyde metabolite

    metabolism

  • 12

    Oxidation of ethanol is also known as metabolism

    true

  • 13

    Change in litmus of acetic acid in reaction with water & indicator

    blue to red

  • 14

    Change in litmus of stearic acid in reaction with water & indicator

    blue to red

  • 15

    Change in color of methyl orange in reaction with water & indicatorr

    pink solution

  • 16

    Change in color with methyl orange of stearic acid in reaction with water & indicator

    orange solution

  • 17

    Carboxylic acids exhibit _____ property in aqueous solution

    acidic

  • 18

    The reaction of carboxylic acid with water & indicator involves the release of _____ fom the carboxyl group and the stability of the conjugated base

    protons

  • 19

    Test to detect the acidity of carboxylic acids through pH measurement using pH paper or pH indicators

    reaction with water & indicator

  • 20

    Acetic acid solubility in reaction with sodium hydroxide

    soluble, clear colorless solution

  • 21

    Stearic acid solubility in reaction with sodium hydroxide

    insoluble, clear colorless solution with insoluble white layer

  • 22

    Test wherein carboxylic acids react with strong bases such as NaoH or KOH to form water-soluble salts as products (neutralization)

    reaction with sodium hydroxide

  • 23

    Acetic acid formation of effervescence in reaction with sodium carbonate

    positive

  • 24

    Acetic acid changes in solution in reaction with sodium carbonate

    no change after heating

  • 25

    Test wherein carboxylic acids react with weak bases such as NaHCO3, a water-soluble salt formed but together with a by-product of a carbon dioxide liberated as gas

    Reaction with sodium carbonate

  • 26

    Reaction accompanied by the formation of effervescence, indicating the release of carbon dioxide from the solution

    reaction with water & indicator

  • 27

    Chemical reaction used to differentiate carboxylic cacids from other weak acids such as phenols

    Reaction with water & indicator

  • 28

    Odor of acetic acid in esterificationo reaction

    pear-like odorr

  • 29

    Odor of benzoic acid in eterification reaction

    nutty-like odor

  • 30

    Alcohols react with carboxylic acid in the presence of an acid catalyst called _____ esterification

    Fischer

  • 31

    During the synthesis of esterification, the acid catalyst promotes the protonation of the carbonyl oxygen which makes the carbonyl

    electrophilic

  • 32

    In esterification reaction, the alcohol acts as the _____ that attacks sthe electrophilic carbonyl carbon

    nucleophile

  • 33

    Reaction that produce a by-product of water and ester wherein the ester would be deprotonated, indicating that the chemical reaction is in equilibrium

    Esterification reaction

  • 34

    Production of an ester is indicated by the presence of characteristic ____ odor rbecause esters are known to exhibit such property

    fruity-like

  • 35

    Color of acetic acid solution in reaction with neutral ferric chloride

    turbid orange solution

  • 36

    Color of tartaric acid solution in reaction with neutral ferric chloride

    turbid orange solution

  • 37

    Precipate of acetic acid in reaction with neutral ferric chloride

    reddish brown precipitate

  • 38

    Precipitate of tartaric acid in reaction with neutral ferric chloride

    reddish brown precipitate

  • 39

    Test used to detect the presence of carboxylic acid

    Reaction with neutral ferric chloride

  • 40

    Reagent used in reaction with neutral ferric chloride is also ferric chloride in sodium carbonate

    true

  • 41

    Positive result in reaction with neutral ferric chloride

    reddish brown preceipitate, brick red precipitate

  • 42

    Test wherein the carboxylic acid is neutralized using ammonium hydroxide to produce ammonium carboxylate while excess ammonia agas is relased through heating

    reaction with neutral ferric chloride

  • 43

    Citric acid in special test before heating

    green solution

  • 44

    Tartaric acid in special test before heating

    violet solution

  • 45

    Citric acid in special test after heating

    brown precipitate

  • 46

    Tartaric acid in special test after heating

    brown precipitate

  • 47

    A tricarboxyxlic acid that has no enantiomer form

    citric acid

  • 48

    A dicarboxylic acid that has two enantiomer forms: D- & L-

    tartaric acid

  • 49

    Special test for identification of citric and tartaric acid was established by _____ & _____

    Champman & Smith

  • 50

    When citric acid is oiled with a very alkaline solution of potassium permanganate, it will yield a _____ solution of alkaline manganate

    green

  • 51

    When tartaric acid is treated with the same solution, _____ precipitate of manganese dioxide will be reduced

    brown

  • 52

    Ethyl acetate in ferric hydroxamate preliminary test

    pale yellow green solution

  • 53

    Ethyl acetate in ferric hydroxamate final test

    dark maroon solution

  • 54

    Organic compound with the general formula of R1C=OOR2, where r1 may be hydrogen, alkyl or aryl groups, and R2 may be an alkyl or aryl group but must not be a hydrogen

    esters

  • 55

    Very common in nature and are known to have characteristic pleasant odors unlike carboxylic acids

    esters

  • 56

    Important test to identidy esters

    Ferric hydroxamate test

  • 57

    Esters when heated with hydroxylamine produce hydroxamic acid that reacts with fereric ion to form intensely colored complexes, commonly _____ in color

    dark maroon

  • 58

    Test related to the phenol test wherein compounds with ehigh enolic character gives colored complexes with ferric ion

    Ferric hydroxamate test

  • 59

    In ferric hydroxamate test, a preliminary test must be performed to check if the carbonyl compound being tested produces senough enol to form colored complexes with ferric ion, which could lead a false positive result

    true

  • 60

    Change in litmus of acetic anhydride in hydrolysis reaction

    blue to red

  • 61

    Chnage in litmus of acetamide in hydrolysis reaction

    red to blue

  • 62

    Changes in solution of acetic anhydride in hydrolysis reaction

    evolution of heat

  • 63

    Changes in solution of acetamide in hydrolysis reaction

    evolution of gas

  • 64

    Acid anhydrides are organic compounds with _____ acyl groups (R-C=O) joined together by an oxygen atom

    two

  • 65

    Organic compounds with general structure of a nitrogen atom bonded to the carbonyl carbon atom (RC=ONH2)

    amides

  • 66

    Acetic anhydride can be hydrolyzed into _____ molecules of acetic acid

    two

  • 67

    Acetamide produces carboxylate salt and free _____

    ammonia

  • 68

    Test that uses pH of the products formed to confirm their presence

    Hyrolysis reaction

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    問題一覧

  • 1

    Organic compounds containing a carboxyl (R-COOH) functional group

    carboxylic acid

  • 2

    Occur widely in nature, often combined with other functional groups, just like in fats, oils, and waxes

    carboxylic acid

  • 3

    An important components of many food and medicines, best known in their common names based on Latin and Greek words describing their sources

    carboxylic acid

  • 4

    Carvoxylic acid contains an _____ group (RCO-) with a hydroxyl group attached to it

    acyl

  • 5

    Carboxylic acid other functional groups could be attached to the acyl group through _____ substitution reaction, replacing the hydroxyl group with subtituents such as halo, alkoxyl, amino, and acyloxy

    nucleophilc

  • 6

    The most common reaction to synthesize carboxylic acids is through the _____ of primary alcohols using potassium dichromate or potassium permanganate

    oxidation

  • 7

    Chemical process of carboxylic acids occurs biologically in the liver on _____ metabolism

    ethanol

  • 8

    Ethanol is metabolized into _____ through an enzyme known as alcohol dehydrogenase, a process that can also occur through CYP450 enzyme

    acetaldehyde

  • 9

    Acetaldehyde is further metabolized into _____ acid through an enzyme known as aldehyde dehydrogenase

    acetic

  • 10

    The acetate metabolite is a more excretable form of metabolism of carboxylic acid

    True

  • 11

    A process of ethanol that prevents the accumulation of the toxic acetaldehyde metabolite

    metabolism

  • 12

    Oxidation of ethanol is also known as metabolism

    true

  • 13

    Change in litmus of acetic acid in reaction with water & indicator

    blue to red

  • 14

    Change in litmus of stearic acid in reaction with water & indicator

    blue to red

  • 15

    Change in color of methyl orange in reaction with water & indicatorr

    pink solution

  • 16

    Change in color with methyl orange of stearic acid in reaction with water & indicator

    orange solution

  • 17

    Carboxylic acids exhibit _____ property in aqueous solution

    acidic

  • 18

    The reaction of carboxylic acid with water & indicator involves the release of _____ fom the carboxyl group and the stability of the conjugated base

    protons

  • 19

    Test to detect the acidity of carboxylic acids through pH measurement using pH paper or pH indicators

    reaction with water & indicator

  • 20

    Acetic acid solubility in reaction with sodium hydroxide

    soluble, clear colorless solution

  • 21

    Stearic acid solubility in reaction with sodium hydroxide

    insoluble, clear colorless solution with insoluble white layer

  • 22

    Test wherein carboxylic acids react with strong bases such as NaoH or KOH to form water-soluble salts as products (neutralization)

    reaction with sodium hydroxide

  • 23

    Acetic acid formation of effervescence in reaction with sodium carbonate

    positive

  • 24

    Acetic acid changes in solution in reaction with sodium carbonate

    no change after heating

  • 25

    Test wherein carboxylic acids react with weak bases such as NaHCO3, a water-soluble salt formed but together with a by-product of a carbon dioxide liberated as gas

    Reaction with sodium carbonate

  • 26

    Reaction accompanied by the formation of effervescence, indicating the release of carbon dioxide from the solution

    reaction with water & indicator

  • 27

    Chemical reaction used to differentiate carboxylic cacids from other weak acids such as phenols

    Reaction with water & indicator

  • 28

    Odor of acetic acid in esterificationo reaction

    pear-like odorr

  • 29

    Odor of benzoic acid in eterification reaction

    nutty-like odor

  • 30

    Alcohols react with carboxylic acid in the presence of an acid catalyst called _____ esterification

    Fischer

  • 31

    During the synthesis of esterification, the acid catalyst promotes the protonation of the carbonyl oxygen which makes the carbonyl

    electrophilic

  • 32

    In esterification reaction, the alcohol acts as the _____ that attacks sthe electrophilic carbonyl carbon

    nucleophile

  • 33

    Reaction that produce a by-product of water and ester wherein the ester would be deprotonated, indicating that the chemical reaction is in equilibrium

    Esterification reaction

  • 34

    Production of an ester is indicated by the presence of characteristic ____ odor rbecause esters are known to exhibit such property

    fruity-like

  • 35

    Color of acetic acid solution in reaction with neutral ferric chloride

    turbid orange solution

  • 36

    Color of tartaric acid solution in reaction with neutral ferric chloride

    turbid orange solution

  • 37

    Precipate of acetic acid in reaction with neutral ferric chloride

    reddish brown precipitate

  • 38

    Precipitate of tartaric acid in reaction with neutral ferric chloride

    reddish brown precipitate

  • 39

    Test used to detect the presence of carboxylic acid

    Reaction with neutral ferric chloride

  • 40

    Reagent used in reaction with neutral ferric chloride is also ferric chloride in sodium carbonate

    true

  • 41

    Positive result in reaction with neutral ferric chloride

    reddish brown preceipitate, brick red precipitate

  • 42

    Test wherein the carboxylic acid is neutralized using ammonium hydroxide to produce ammonium carboxylate while excess ammonia agas is relased through heating

    reaction with neutral ferric chloride

  • 43

    Citric acid in special test before heating

    green solution

  • 44

    Tartaric acid in special test before heating

    violet solution

  • 45

    Citric acid in special test after heating

    brown precipitate

  • 46

    Tartaric acid in special test after heating

    brown precipitate

  • 47

    A tricarboxyxlic acid that has no enantiomer form

    citric acid

  • 48

    A dicarboxylic acid that has two enantiomer forms: D- & L-

    tartaric acid

  • 49

    Special test for identification of citric and tartaric acid was established by _____ & _____

    Champman & Smith

  • 50

    When citric acid is oiled with a very alkaline solution of potassium permanganate, it will yield a _____ solution of alkaline manganate

    green

  • 51

    When tartaric acid is treated with the same solution, _____ precipitate of manganese dioxide will be reduced

    brown

  • 52

    Ethyl acetate in ferric hydroxamate preliminary test

    pale yellow green solution

  • 53

    Ethyl acetate in ferric hydroxamate final test

    dark maroon solution

  • 54

    Organic compound with the general formula of R1C=OOR2, where r1 may be hydrogen, alkyl or aryl groups, and R2 may be an alkyl or aryl group but must not be a hydrogen

    esters

  • 55

    Very common in nature and are known to have characteristic pleasant odors unlike carboxylic acids

    esters

  • 56

    Important test to identidy esters

    Ferric hydroxamate test

  • 57

    Esters when heated with hydroxylamine produce hydroxamic acid that reacts with fereric ion to form intensely colored complexes, commonly _____ in color

    dark maroon

  • 58

    Test related to the phenol test wherein compounds with ehigh enolic character gives colored complexes with ferric ion

    Ferric hydroxamate test

  • 59

    In ferric hydroxamate test, a preliminary test must be performed to check if the carbonyl compound being tested produces senough enol to form colored complexes with ferric ion, which could lead a false positive result

    true

  • 60

    Change in litmus of acetic anhydride in hydrolysis reaction

    blue to red

  • 61

    Chnage in litmus of acetamide in hydrolysis reaction

    red to blue

  • 62

    Changes in solution of acetic anhydride in hydrolysis reaction

    evolution of heat

  • 63

    Changes in solution of acetamide in hydrolysis reaction

    evolution of gas

  • 64

    Acid anhydrides are organic compounds with _____ acyl groups (R-C=O) joined together by an oxygen atom

    two

  • 65

    Organic compounds with general structure of a nitrogen atom bonded to the carbonyl carbon atom (RC=ONH2)

    amides

  • 66

    Acetic anhydride can be hydrolyzed into _____ molecules of acetic acid

    two

  • 67

    Acetamide produces carboxylate salt and free _____

    ammonia

  • 68

    Test that uses pH of the products formed to confirm their presence

    Hyrolysis reaction