Alkanes

Home > Preview

The flashcards below were created by user omi14 on FreezingBlue Flashcards.


  1. List the names of 1-12 straight chain alkanes
    • methane
    • ethane
    • propane
    • butane
    • pentane
    • hexane
    • heptane
    • octane
    • nonane
    • decane
    • undecane
    • dodecane
  2. What is the structure of n-butane?
    CH3CH2CH2CH3
  3. What is the structure of isobutane?
    Image Upload
  4. What is the structure of isopentane?
    Image Upload
  5. What is the structure of neopentane?
    Image Upload
  6. What is the structure of propyl group?
    Image Upload
  7. What is the structure of isopropyl group?
    Image Upload
  8. What is the structure of n-butyl group?
    Image Upload
  9. What is the structure of sec-butyl group?
    Image Upload
  10. What is the structure of isobutyl group?
    Image Upload
  11. What is the structure of tert-butyl group?
    Image Upload
  12. Give torsial strain values
    • H/H eclipsed = 1 kcal/mol
    • H/CH3 = 1.3 kcal/mol
    • CH3/CH3 eclipsed = 3.0 kcal/mol
    • CH3/CH3 gauche =0.9 kcal/mol
  13. What are the different types of isomers?
    • Structural isomers vs stereoisomers
    • Stereoisomers: enantiomers vs diastereomers
    • Diastereomers: cis-trans isomers (geometric) vs other diastereomers
  14. How do you calculate specific rotation?
    • [α]=αobserved/(C*l)
    • C = concentration of sample (g/ml)
    • l = length of cell (dm)

    The specific rotation of (+/d) is the |x| of (-/l) and vice versa
  15. How do you use specific rotation to measure purity of a sample?
    • optical purity = o.p. = (observed rotation)/(rotation of pure enantiomer)*100%
    • enantiomeric excess = e.e. = |d-l|/(d+l) = (excess of one enantiomer)/(entire mixture)*100%

Card Set Information

Author:
omi14
ID:
123532
Filename:
Alkanes
Updated:
2011-12-14 03:00:05
Tags:
CHM 325 organic chemistry alkane
Folders:

Description:
CHM 325 Organice Chemistry
Show Answers:

Home > Flashcards > Print Preview