100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Organic Chemistry Exam 4 Questions and Answers CA$15.05   Add to cart
Quickly navigate to
Preview
  2.  
  3. Organic Chemistry
  4.  
  5. Organic Chemistry

Exam (elaborations)

Organic Chemistry Exam 4 Questions and Answers
 14 views  0 purchase
  • Course
  • Organic Chemistry
  • Institution
  • Organic Chemistry

acetylenes = - Answer-alkynes olefins = - Answer-alkenes E = - Answer-trans Z = - Answer-cis stability of cis vs. trans - Answer-trans is more stable hydrogenation - Answer-exothermic addition of H to an alkene relate the heats of reaction for trans-butene, cis-butene, and 1-buten...

[Show more]

Preview 2 out of 5  pages

Document information

  • August 26, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • organic chemistry exam 4 questions and answers
  • acetylenes answer alkynes

Written for

  • Organic Chemistry
  • Organic Chemistry

Seller

avatar-seller
lectknancy

Reviews received

Content preview

Organic Chemistry Exam 4 Questions
and Answers
acetylenes = - Answer-alkynes

olefins = - Answer-alkenes

E = - Answer-trans

Z = - Answer-cis

stability of cis vs. trans - Answer-trans is more stable

hydrogenation - Answer-exothermic addition of H to an alkene

relate the heats of reaction for trans-butene, cis-butene, and 1-butene. - Answer-1-
butene > cis-2-butene > trans-2-butene (most stable)

stabilities of alkenes (substitution) - Answer-tetra- > tri- > di-> mono- > un-

stabilities of alkenes (status) - Answer-tertiary > secondary > primary

elimination reactions of alkyl halides require... - Answer-a base (-HX)

alkyl halide formula - Answer-C2H5X

elimination reactions of alcohols require... - Answer-H+, heat (-HOH)

alcohol formula - Answer-C2H5OH

dehydrohalogenation is - Answer-E2

more alkylated = - Answer-more stable

how to favor an E2 - Answer-use a secondary or tertiary alkyl halide, use bulky base if
using a primary, use high concentration of strong base, use high temperature

why would a secondary or tertiary alkyl halide be better for E2? - Answer-steric
hindrance prevents substitution

Zaitsev rule - Answer-formation of the more substituted alkene is favored with a small
base

, Hoffman rule - Answer-formation of the less substituted alkene is favored with a bulky
base

how does the steric bulk of the base affect the Hoffman rule? - Answer-it has difficulty
removing internal secondary H's so it just removes a primary

anti/syn - which is preferred? - Answer-anti

what causes anti/syn? - Answer-proper alignment of orbitals in developing pi bond

why is anti preferred? - Answer-staggered, so lower energy

dehydration of alcohols order of reactivity - Answer-tertiary > secondary > primary

dehydration of alcohols description - Answer-loss of H2O to yield alkene when heated
with SA

the more difficult the alcohol, - Answer-the stronger the base and higher the
temperature needed to dehydrate.

rearrangement during dehydration of alcohols - Answer-less stable secondary
carbocation rearranges to more stable tertiary carbocation

1,2 shift - Answer-group migrates from 1 C to a neighboring 1

alkyl shift - Answer-CH3 group moves

hydride shift - Answer-H moves

migration order of reactivity - Answer-tertiary > secondary > primary > can't happen in
Me

vicinal dihalide - Answer-bearing halogens on adjacent carbons

geminal dihalides - Answer-bearing halogens on same carbon

retrosynthesis - Answer-product => reactant

addition reactions result in... - Answer-conversion of one pi and one sigma bond to 2
sigma bonds

the amazing thing about addition reactions - Answer-every atom in reactant converted
into one organic product

why do addition reactions attack the pi bond? - Answer-the electrons are exposed
because they are perpendicular to the double bond

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller lectknancy. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$15.05. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80461 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$15.05
  • (0)
  Add to cart