Homework Answers
answer is Termination of the radical.
Free radical polimarisation reaction consists of three stages,
1. Iniciation
Here the highly reactive free radical is formed.
2. Propagation
In this stage One free radical reacts with another molicule to produce a new chain and free radical. This newly formed free radical again react with another molicule and form new free radical and a new chain.
3. Termination
In this step the reaction between two free radical takesplace and form the final product.
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The following best illustrates a particular step in radical polymerization. Which step is it? R R...
The second step in radical polymerization is forming the carbon radical terminating the radical O propagating...
The second step in radical polymerization is forming the carbon radical terminating the radical O propagating the carbon radical O forming the radical initiator
DI Question 6 1 pts Consider the second step of initiation for radical polymerization where the...
DI Question 6 1 pts Consider the second step of initiation for radical polymerization where the active center is created. If "R" is the initiator fragment, what is the most likely configuration of the active center for the monomer shown below? O C O D D Question 7 1 pts
In normal free radical processes with added initiator, the polymerization rate and kinetic chain length are...
In normal free radical processes with added initiator, the polymerization rate and kinetic chain length are proportional to the first power of monomer concentration. What would be the effect of monomer concentration on rate and chain length in the thermal polymerization of styrene (which involves no initiator)? Derive a kinetics expression to show this.Assume that initiation is based on the following equation: M + M -> 2 M. (radical in the product).
1. Give the detailed arrow-pushing mechanism for the free radical polymerization of methyl methac...
Please write legibly thank you!
1. Give the detailed arrow-pushing mechanism for the free radical polymerization of methyl methacrylate. Show the initiation step and the addition of at least 2 monomers. You do not need to show a termination step, but do show the [ Jn notation of the final polymer. NEATNESS COUNTS heat poly(methyl methacrylate methyl methacrylate The initiator in this experiment, benzoyl peroxide, contains a weak 0-0 bond that undergoes homolytic cleavage at elevated temperatures. This leads to...
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only...
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only one 1) The first of the chain-propagating steps is rate-determining. 2) The reaction proceeds by way of a flat sp2 hybridized free radical. 3) The chain-initiating step involves cleavage of a carbon-hydrogen bond to afford a carbon radical and a hydrogen atom. 4) Statements (The first of the chain-propagating steps is rate-determining) and (The reaction proceeds by way of a flat sp2 hybridized free...
What is Wrong? Select the keyword or phrase that will best complete each sentence. Key terms: A radical...
What is Wrong?
Select the keyword or phrase that will best complete each sentence. Key terms: A radical is a reactive intermediate with a single unpaired electron, formed by homoloysis of a covalent bond. paired unpaired Allylic radicals are stabilized by resonance, making them more stable than tertiary radicals increases inductive effects A compound that contains an especially weak bond that serves as a source of radicals is called a radical initiator ess homoloysis decreases more J Treatment of cyclohexene...
i) Which of the following is not true about step-growth polymers? Formation of step-growth polymers usually...
i) Which of the following is not true about step-growth polymers? Formation of step-growth polymers usually results in the loss of a small molecule. Step-growth polymers are formed by the reaction of bifunctional molecules. Step-growth polymers can be formed by a free radical mechanism. Step-growth polymers are also known as condensation polymers. Step-growth polymers do not reach high molecular weight until the reaction has gone nearly to completion. ii) Which of the following are not termination methods in radical polymerization?...
Which of the following is more likely to undergo both radical and cationic polymerization? I, CH2-CH2...
Which of the following is more likely to undergo both radical and cationic polymerization? I, CH2-CH2 IL CH CHCI IV. V. CH,-CCH, ?. COOR O I 0 11 0 11 IV
1.) Which type of polymerization starts when a free radical is mixed with monomer units? 1)...
1.) Which type of polymerization starts when a free radical is mixed with monomer units? 1) Sequential polymerization 2) Addition polymerization 3) Subtraction polymerization 4) Condensation polymerization 2.) Which of the following are structural features of a weak polymer? (choose all that apply) small substituent side-chain groups large substituent side-chain groups lots of branching in the backbone little branching in the backbone
which observation illustrates the law of coservation of mass? Which observation illustrates the law of conservation...
which observation illustrates the law of coservation of mass?
Which observation illustrates the law of conservation of mass? The C:O mass ratio of one compound is exactly double that of another compound. When 3 g of carbon reacts with 8 g of oxygen, 11 g of carbon dioxide is produced. The C:O mass ratio of a particular compound is the same, regardless of the size or source of the sampl O Burning 10 g of propane produces twice as much...
The second step in radical polymerization is forming the carbon radical terminating the radical O propagating the carbon radical O forming the radical initiator
DI Question 6 1 pts Consider the second step of initiation for radical polymerization where the active center is created. If "R" is the initiator fragment, what is the most likely configuration of the active center for the monomer shown below? O C O D D Question 7 1 pts
Please write legibly thank you!
1. Give the detailed arrow-pushing mechanism for the free radical polymerization of methyl methacrylate. Show the initiation step and the addition of at least 2 monomers. You do not need to show a termination step, but do show the [ Jn notation of the final polymer. NEATNESS COUNTS heat poly(methyl methacrylate methyl methacrylate The initiator in this experiment, benzoyl peroxide, contains a weak 0-0 bond that undergoes homolytic cleavage at elevated temperatures. This leads to...
What is Wrong?
Select the keyword or phrase that will best complete each sentence. Key terms: A radical is a reactive intermediate with a single unpaired electron, formed by homoloysis of a covalent bond. paired unpaired Allylic radicals are stabilized by resonance, making them more stable than tertiary radicals increases inductive effects A compound that contains an especially weak bond that serves as a source of radicals is called a radical initiator ess homoloysis decreases more J Treatment of cyclohexene...
Which of the following is more likely to undergo both radical and cationic polymerization? I, CH2-CH2 IL CH CHCI IV. V. CH,-CCH, ?. COOR O I 0 11 0 11 IV
which observation illustrates the law of coservation of mass?
Which observation illustrates the law of conservation of mass? The C:O mass ratio of one compound is exactly double that of another compound. When 3 g of carbon reacts with 8 g of oxygen, 11 g of carbon dioxide is produced. The C:O mass ratio of a particular compound is the same, regardless of the size or source of the sampl O Burning 10 g of propane produces twice as much...
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