Ochem ch 7 structure and synthesis of alkenes part 1 (pi bond, elements of unsaturation, heteroat

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mikepl103
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243441
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Ochem ch 7 structure and synthesis of alkenes part 1 (pi bond, elements of unsaturation, heteroat
Updated:
2013-10-28 20:24:17
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Ochem structure synthesis alkenes pi bond elements unsaturation heteroatom alkene cis trans bredt rule E2 vicinal dibromides E1 dehydration alcohols
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Ochem ch 7 structure and synthesis of alkenes part 1 (pi bond, elements of unsaturation, heteroatom, alkene, cis-trans, E-Z, bredt's rule, E2, vicinal dibromides, E1, dehydration of alcohols)
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  1. does it take more energy to break a pi bond or a sigma bond?
    it takes more energy to break a sigma bond
  2. what is an element of unsaturation?
    anything that decreases the number of H's in a hydrocarbon (ex. pi bond, rings, etc.)
  3. how do you calculate the number of elements of unsaturation?
    find number of H's if it were saturated, subtract the actual number of H's an divide by two
  4. When calculating the number of elements of unsaturation, how does Oxygen affect the C:H ratio?
    you can ignore oxygen, it doesn't affect the C:H ratio
  5. When calculating the number of elements of unsaturatiuon, how does nitrogen affect the C:H ratio?
    nitrogen acts like half a carbon
  6. count the number of elements of unsaturation in C6H7N
    4 elements of unsaturation
  7. When naming an alkene, how do you find the parent chain?
    parent chain is the longest chain containing the double bond
  8. in the iupac naming of an alkene, -ane changes to ___
    -ene (or -diene or triene)
  9. When naming an alkene, name it such that the ___ _____ has the lowest possible number
    double bond
  10. In a ring, the double bond is assumed to be located between ____ and _____
    between carbon 1 and carbon 1

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