CHM 219 Module 4/5/7 Exam Questions With Revised Correct Detailed Answers |ALREADY GRADED A+ PASS 2024 >> BRAND NEW VERSION!!
0 view 0 purchase
Course
CHM 219
Institution
CHM 219
CHM 219 Module 4/5/7 Exam
Questions With Revised
Correct Detailed Answers
|ALREADY GRADED A+ PASS 2024
>> BRAND NEW VERSION!!
1) Dehydrohalogenation - ANSWER
When the reaction occurs
specifically on an alkyl halide substrate. Both H and Halogen are being
eliminated fro...
CHM 219 Module 4/5/7 Exam
Questions With Revised
Correct Detailed Answers
|ALREADY GRADED A+ PASS 2024
>> BRAND NEW VERSION!!
1) Dehydrohalogenation - ANSWER When the reaction occurs
specifically on an alkyl halide substrate. Both H and Halogen are being
eliminated from the substrate molecule.
2) E2 - ANSWER -one step
-biomolecular
-Nucleophile acts as a base and removes the beta H from the beta C, at
the same time the electrons from the C-H bond come down tot for a
C=C bond and break the carbon halogen bond, releasing a halide ion.
3) E1 - ANSWER -several steps
-alkyl halid first undergoes dissociation from the carbocation
intermediate.
,-once formed the carbocation intermediate undergoes elimination by
the nucleophile (acting as base) removing a Beta H from a beta C to
form the C=C
4) Primary Alkyl Halide (RCH2X) - ANSWER Will react by an Sn2
pathway if a good nucleophile (I-, Br-, RS-, NH3, or CN-) is used. There
will be increasing amounts of elimination product from an E2 pathway
as the basicity of the nucleophile increases (HO-, RO-). No Sn1 or E1
pathways are possible for primary substrates.
5) Secondary Alkyl Halide(R2CHX) - ANSWER While all four
mechanistic pathways are possible, typically these substrates will react
by both Sn2 (when weak bases are used) and E2 (when strong bases are
used) pathways to give a mixture of substitution and elimination
products.
6) Tertiary alkyl halide (R3X) - ANSWER Will react by an E2 pathway
when a strong and/or bulky base is used as the nucleophile. When a
weak nucleophile is used (or under acidic conditions) a mixture of
substitution and elimination products will form by Sn1 and E1
mechanisms. No Sn2 pathway is available for tertiary substrates.
, Ex. Algae, Mollusk, sponges, can be industrially used - solvents,
insecticides, herbicides, cleaning fluids, fire retardants, refrigerants.
Can also be used as inhaled anesthetic.
More important in organic chemistry because of theur reactivity.
8) Two of the most important reaction types typical of organic Halides
are.... - ANSWER Substitution
Elimination
9) Substitution Reaction - ANSWER Replacing the halogen in a
molecule with another atom or functional group.
10) Elimination - ANSWER Removes the halogen and hydrogen
atoms from the original substrate molecule creating an unsaturated
compound.
11) Alkyl halide - ANSWER Aliphatic hydrocarbons that possess one
or more halogen atom substituents.
12) Aryl Halides - ANSWER Aromatic hydrocarbons (benzene rings)
with one or more halogen atoms attached to the ring.
13) Steric Bulk - ANSWER Structural substitution surrounding any
carbon atom that bears a halogen. Methyl, primary, secondary, tertiary.
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 TOPPLUGGER. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
