O CHEM 2

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Author:
allenwhycheng
ID:
59827
Filename:
O CHEM 2
Updated:
2011-01-14 15:18:57
Tags:
mcat organic chemistry
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studying to be a doctore
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  1. are the following activating/ deactivating? ortho/ para or meta directing?
    1.COOH
    2.NR2
    3.NH2
    4.NO2
    5.F,Cl, Br, I
    6.COOR
    7.OR
    8.SO3H
    9.OCOR
    10. CH3
    • 1. de/ m
    • 2.act/ op
    • 3.act/op
    • 4.de/m
    • 5.de/op
    • 6.de/m
    • 7.act/op
    • 8.de/m
    • 9.act/op
    • 10.act/op
  2. (t/f) activating compounds are always op director
    true
  3. (t/f) deactivating compounds are always m directors
    false, halogens are deactivating and are op director
  4. do alcohol have higher or lower boiling point than analogous alkanes
    higher, because it can form H bonds
  5. 3 types of rxn to synthesize alcohol
    addition, substitution and reduction
  6. can ethers make H bonds?
    no
  7. how do boiling points of aldehyde (or ketone) compare with its analogous alkane? alcohol
    higher than alkanes, lower than alcohol
  8. what happens when aldehyde or ketone reacts with water
    form gem-diols
  9. what would be the product when aldehyde react with diluted NaOH?
    an aldol
  10. how do electron withdrawing groups (-Cl, -NO2) attached to the alpha carbon effect the acidity of a carboxylic acid
    increase acidity
  11. whats a michelle? is the interior hydrophobic or hydrophilic
    when in aqueous solution, soap molecules arrange themselves into spherical structures called michelles. their polar heads are facing out, non polar chains face in
  12. how do electron donating groups affect the acidity of benzoic acid
    reduces it
  13. what is the product of the hydrolysis of an amide under acidic conditions
    carboxylic acid
  14. name the following compound
    1.CH3CH2NH2
    2.CH3CH2CH2CH2N(CH2)2
    • 1.ethanamine or ethylamine (common name)
    • 2. N, N-dimethylbutanamine
  15. what separation techniques makes use of two immiscible solvents?
    extraction
  16. what separation techniques can be used to isolate a solid from a liquid?
    filtration
  17. which separation techniques can be use to separate a mixture of particles with different densities and masses?
    centrifuge
  18. what separation techniques takes advantage of a solution containing tow or more compounds with different boiling points
    distillation
  19. what separation techinque separates compounds based on their different affinities for a medium
    chromatography
  20. what is the Rf value in thin layer chromatography
    distance a compound travels divided by the distance the solvent travels
  21. which separation techniques uses an electric field
    electrophoresis
  22. whats saponification
    process whereby fats are hydrolyzed under basic conditions, to produce soap
  23. products for hydrolysis of an ester?
    carboxylic acid and alcohol
  24. (t/f) isoelectric focusing uses a gel with a pH gradient to separate proteins based on their isoelectric points
    true
  25. SDS-polyacrylamide gel electrophoresis separates proteins based on what factor?
    proteins' masses
  26. spectroscopy for identifying functional groups
    IR
  27. how many different NMR peaks would appear for:
    1.ethane
    2.propane
    3.1,3 dichoropropane
    • 1. singlet
    • 2. 1 septet, and 1 trplet
    • 3. 1 quintet and 1 triplet
  28. how many different types of equivalent protons are there in 1-bromo=2-chloropropane?
    3 different types of equivalent protons
  29. what kind of spectroscopy is ideal for studying of conjugated olefins?
    UV
  30. what spectroscopy ca determine the molecular weight of a compound
    mass

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