Module 8 Portage 219 Organic Chemistry Latest Update 2024-2025 Actual Exam from Credible Source with 225 Questions and 100% Verified Detailed Correct Answers Guaranteed A+ Approved by Professor
- Atactic
- Isotactic
3.Syndiotactic - CORRECT ANSWER: 3 main classes of polymer tacticity
- chain-end control
2. site control - CORRECT ANSWER: 2 ways to control polymer stereochemistry
- chain-growth
2. step-growth - CORRECT ANSWER: Two classifications of Synthetic polymers
- electrically neutral
- quite reactive and reacts quickly to pair up the lone electron
- formed from radical initiators - CORRECT ANSWER: 3 main characteristics of free-
radicals
- free radical
- cationic
3. anionic - CORRECT ANSWER: three main mechanisms for addition/ chain-growth
polymerization
- Initiation
- Propagation 1 / 3
3. Termination - CORRECT ANSWER: 3 steps in a Chain Reaction of free-radical
polymerization
- intervention
2. consumption of all available monomers - CORRECT ANSWER: what 2 things stops
chain growth polymerization?
- method of formation
- final composition
3. stereochemical orientation - CORRECT ANSWER: 3 main ways to differentiate
polymers
- molecular weight (and distribution)
2. amount of branching (of the chain architecture) - CORRECT ANSWER: polymer
properties are strongly affected by:
- natural (in nature)
2. synthetic (in lab) - CORRECT ANSWER: two ways polymers are made
- number of substituents present
2. type of substituents present - CORRECT ANSWER: two things that determine the
reactivity of a monomer
- Radical Coupling
2. Radical Disproportionation - CORRECT ANSWER: 2 pathways of termination
- temperature
- pressure
3.solvent used 2 / 3
4.monomer concentration - CORRECT ANSWER: What 4 main factors determine the
extent of the polymerization?
- the monomer used
2. the molecular weight of the final polymer chain - CORRECT ANSWER: two main
things that control polymer properties
a new chiral center is formed at every position where the substituent branches from the
back bone of the chain - CORRECT ANSWER: what is formed when a monosubstituted
alkene monomer is polymerized?
addition polymers - CORRECT ANSWER: chain growth polymers are also know as:
adds to the LEAST substituted carbon of the C=C bond because this carbon is easier to approach and less hindered to produce a more stable radical intermediate - CORRECT
ANSWER: which substituent does the radical add to in the monomer?
Alternating Copolymer - CORRECT ANSWER: monomeric units distributed regularly +
alternating with nearly equimolar amounts in each chain
alternating order in the final polymer chain - CORRECT ANSWER: appearance of
monomers in step-growth polymerization
alternating sequence (ABABABABABA) - CORRECT ANSWER: situation creates what
copolymer?A reacts rapidly with B but slow with self B reacts rapidly with A but slow with self
Amorphous polymers - CORRECT ANSWER: polymer chains arranged in random
manner- not regularly aligned as in a crystal
- / 3