Chem 1120 Quiz 1 Key

    1. dipropyl ether (ether)
    2. 7-ethyl-6-methyl-2-nonanol (alcohol)
    3. 2, 4, 6-trimethylcyclohexanone (ketone)
    4. 2, 2, 3, 3-tetramethylpentanoic acid (carboxylic acid)
    5. 3,4-dimethylhexanal (aldehyde)


  2. atom
    hybridization
    geometry
    C-1
    sp2
    trigonal planar
    C-2
    sp2
    trigonal planar
    C-3
    sp2
    trigonal planar
    C-4
    sp2
    trigonal planar
    O-1
    sp3
    bent
    C-5
    sp
    linear
    C-6
    sp
    linear
    C-7
    sp3
    tetrahedral
    N-1
    sp3
    pyramidal
    O-2
    sp3
    bent
    C-8
    sp3
    tetrahedral

  3. 18 constitutional isomers with the molecular formula C8H18
    1. octane 10. 3,4-dimethylhexane
    2. 2-methylheptane 11. 3-ethylhexane
    3. 3-methylheptane 12. 2,2,3-trimethylpentane
    4. 4-methylheptane 13. 2,2,4-trimethylpentane
    5. 2,2-dimethylhexane 14. 2,3,3-trimethylpentane
    6. 2,3-dimethylhexane 15. 2,3,4-trimethylpentane
    7. 2,4-dimethylhexane 16. 3-ethyl-2-methylpentane
    8. 2,5-dimethylhexane 17. 3-ethyl-3-methylpentane
    9. 3,3-dimethylhexane 18. 2,2,3,3-tetramethylbutane

  4. the complete combustion of 3-ethyl-2,6-dimethyloctane (C12H26)

    5. 2 C12H26 + 37 O2 => 24 CO2 + 26 H2O