Aliphatic Compounds Quiz
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Questions and Answers

What is the product of the reduction of a nitrile using LiAlH4 in dry ether?

amine

N.S.- PBr3, Heat - SOCl2, Heat - HCl(g), Heat - ___

PCl5

What compound is formed when a primary alcohol is oxidized using K2Cr2O7(aq) and H2SO4(aq)?

  • Ketone (correct)
  • Carboxylic acid
  • Aldehyde
  • Ester
  • What reagent is used for the reduction of aldehydes and ketones?

    <p>LiAlH4</p> Signup and view all the answers

    Match the following carbonyl compound with the correct oxidation method:

    <p>CHO/COC = KMnO4(aq) H2SO4(aq), Heat - K2Cr2O7(aq) RCO2H = I2(aq) in NaOH - Warm, then dilute H2SO4</p> Signup and view all the answers

    Amine RNH2 can be converted to a secondary amine RNHR' through a process involving _.

    <p>heat</p> Signup and view all the answers

    Study Notes

    Aliphatic Compounds

    Alkanes

    • Combustion reactions: CO2 + H2O with excess O2, CO + H2O with limited O2
    • Reduction reactions: H2, Pt/Pd, H2, Ni, Heat
    • Elimination reactions: KOH(alc)/NaOH (alc), Heat

    Alkenes

    • Characterized by the presence of a C=C bond
    • Unknown properties (q)

    Halogenoalkanes

    • General formula: RX
    • Nucleophilic Substitution (N.S.) reactions: NaOH, Heat; PBr3, Heat; SOCl2, Heat; HCl(g), Heat; PCl5
    • Electrophilic Addition (E.A.) reactions: Br2 in CCl4, resulting in a color change from orange to colorless
    • Hydrogen halide gas reactions: HBr(g)
    • Reaction with RONa and EtOH: forms Nats

    Alcohols

    • General formula: ROH
    • Elimination reactions: Excess conc. H2SO4, Heat or Al2O3, Heat
    • Oxidative cleavage reactions: KMnO4(aq), H2SO4(aq), Heat
    • Condensation reactions: RCO2H, ROH, H2SO4(aq), Heat
    • Reduction reactions: LiAlH4, in dry ether
    • Oxidation reactions: K2Cr2O7(aq), H2SO4(aq), Heat; KMnO4(aq)
    • Primary (1°) alcohol oxidation: forms RCHO
    • Secondary (2°) alcohol oxidation: forms RCOR

    Nitriles

    • General formula: RCN
    • Nucleophilic Substitution (N.S.) reactions: KCN(alc), Heat; 1° RNH2, excess NH3, Heat in a sealed tube
    • Reduction reactions: LiAlH4, in dry ether

    Amines

    • General formula: RNH2
    • Reaction with 2° RNHR': forms R3N, Heat
    • Reaction with HCN(aq): requires trace NaOH(aq)
    • Hydrolysis reactions: H2SO4(aq), Heat
    • Reduction reactions: LiAlH4, in dry ether

    Carbonyls

    • General formula: CHO/COC
    • Oxidation reactions: KMnO4(aq), H2SO4(aq), Heat; K2Cr2O7(aq)
    • Iodoform reaction: I2(aq) in NaOH, Warm, then dilute H2SO4

    Carboxylic Acids

    • General formula: RCO2H
    • Hydrolysis/Nucleophilic Substitution (N.S.) reactions: H2O
    • Decarboxylation reactions: Na/NaOH/NaHCO3/Na2CO3, Soda lime, Heat

    Alkane Sodium Salt

    • General formula: RCO2Na
    • Hydrolysis reactions: HCl(aq), H2SO4(aq), NaOH(aq), Heat
    • Nucleophilic Substitution (N.S.) reactions: NH3/RNH2

    Alkyl Chloride

    • General formula: RCOCl
    • Nucleophilic Substitution (N.S.) reactions: PCl5, SOCl2, Heat, PC13, Heat

    Amides

    • General formula: RCONH2

    Free Radical Substitution

    • Initiation reaction: Cl2 -> 2Cl
    • Propagation reaction: CH3CH2

    Aliphatic Compounds

    Alkanes

    • Combustion reactions: CO2 + H2O with excess O2, CO + H2O with limited O2
    • Reduction reactions: H2, Pt/Pd, H2, Ni, Heat
    • Elimination reactions: KOH(alc)/NaOH (alc), Heat

    Alkenes

    • Characterized by the presence of a C=C bond
    • Unknown properties (q)

    Halogenoalkanes

    • General formula: RX
    • Nucleophilic Substitution (N.S.) reactions: NaOH, Heat; PBr3, Heat; SOCl2, Heat; HCl(g), Heat; PCl5
    • Electrophilic Addition (E.A.) reactions: Br2 in CCl4, resulting in a color change from orange to colorless
    • Hydrogen halide gas reactions: HBr(g)
    • Reaction with RONa and EtOH: forms Nats

    Alcohols

    • General formula: ROH
    • Elimination reactions: Excess conc. H2SO4, Heat or Al2O3, Heat
    • Oxidative cleavage reactions: KMnO4(aq), H2SO4(aq), Heat
    • Condensation reactions: RCO2H, ROH, H2SO4(aq), Heat
    • Reduction reactions: LiAlH4, in dry ether
    • Oxidation reactions: K2Cr2O7(aq), H2SO4(aq), Heat; KMnO4(aq)
    • Primary (1°) alcohol oxidation: forms RCHO
    • Secondary (2°) alcohol oxidation: forms RCOR

    Nitriles

    • General formula: RCN
    • Nucleophilic Substitution (N.S.) reactions: KCN(alc), Heat; 1° RNH2, excess NH3, Heat in a sealed tube
    • Reduction reactions: LiAlH4, in dry ether

    Amines

    • General formula: RNH2
    • Reaction with 2° RNHR': forms R3N, Heat
    • Reaction with HCN(aq): requires trace NaOH(aq)
    • Hydrolysis reactions: H2SO4(aq), Heat
    • Reduction reactions: LiAlH4, in dry ether

    Carbonyls

    • General formula: CHO/COC
    • Oxidation reactions: KMnO4(aq), H2SO4(aq), Heat; K2Cr2O7(aq)
    • Iodoform reaction: I2(aq) in NaOH, Warm, then dilute H2SO4

    Carboxylic Acids

    • General formula: RCO2H
    • Hydrolysis/Nucleophilic Substitution (N.S.) reactions: H2O
    • Decarboxylation reactions: Na/NaOH/NaHCO3/Na2CO3, Soda lime, Heat

    Alkane Sodium Salt

    • General formula: RCO2Na
    • Hydrolysis reactions: HCl(aq), H2SO4(aq), NaOH(aq), Heat
    • Nucleophilic Substitution (N.S.) reactions: NH3/RNH2

    Alkyl Chloride

    • General formula: RCOCl
    • Nucleophilic Substitution (N.S.) reactions: PCl5, SOCl2, Heat, PC13, Heat

    Amides

    • General formula: RCONH2

    Free Radical Substitution

    • Initiation reaction: Cl2 -> 2Cl
    • Propagation reaction: CH3CH2

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