Finding the repeating unit of polymerisation given two constituent moleculesNumber of hydrogen molecules necessary in acetonitrile/butanediamine polymerisationHow to identify the repeating unit in a polymer?Contact lenses come in two polymer classes, ionic or non-ionic. Whats the significance of having both?Why the backbone of polylactic acid's repeating unit contains only one oxygen?How does cross-linking between polymer chains increase the melting point of the polymer?Polymerisation of methyl methacrylate - can the C=O group get involved?Why must polymers have a repeating unit?Calculating the enthalpy of polymerisation of ethylene given the bond strengthsRepeating unit of poly lactic acid (PLA)Why does the degree of polymerisation remain the same throughout chain-growth polymerisation?
Email Account under attack (really) - anything I can do?
What do the dots in this tr command do: tr .............A-Z A-ZA-Z <<< "JVPQBOV" (with 13 dots)
Why can't I see bouncing of a switch on an oscilloscope?
Why are electrically insulating heatsinks so rare? Is it just cost?
Collect Fourier series terms
Finding angle with pure Geometry.
Font hinting is lost in Chrome-like browsers (for some languages )
Is it important to consider tone, melody, and musical form while writing a song?
Test whether all array elements are factors of a number
Is a tag line useful on a cover?
How to format long polynomial?
Is it unprofessional to ask if a job posting on GlassDoor is real?
Can I ask the recruiters in my resume to put the reason why I am rejected?
How does strength of boric acid solution increase in presence of salicylic acid?
can i play a electric guitar through a bass amp?
What does it mean to describe someone as a butt steak?
In Japanese, what’s the difference between “Tonari ni” (となりに) and “Tsugi” (つぎ)? When would you use one over the other?
I’m planning on buying a laser printer but concerned about the life cycle of toner in the machine
Python: next in for loop
What are the differences between the usage of 'it' and 'they'?
How to find program name(s) of an installed package?
"You are your self first supporter", a more proper way to say it
How is it possible to have an ability score that is less than 3?
Why "Having chlorophyll without photosynthesis is actually very dangerous" and "like living with a bomb"?
Finding the repeating unit of polymerisation given two constituent molecules
Number of hydrogen molecules necessary in acetonitrile/butanediamine polymerisationHow to identify the repeating unit in a polymer?Contact lenses come in two polymer classes, ionic or non-ionic. Whats the significance of having both?Why the backbone of polylactic acid's repeating unit contains only one oxygen?How does cross-linking between polymer chains increase the melting point of the polymer?Polymerisation of methyl methacrylate - can the C=O group get involved?Why must polymers have a repeating unit?Calculating the enthalpy of polymerisation of ethylene given the bond strengthsRepeating unit of poly lactic acid (PLA)Why does the degree of polymerisation remain the same throughout chain-growth polymerisation?
$begingroup$
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CONHCH2CH2NHCOenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CONHCH2NHCOenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2NHenclosehorizontalstrike)$
I came across this question which requires me to find the structure of the repeating unit of the polymer made by the reaction of two different compounds. However, I am not sure as to which repeating unit would suffice for this particular polymer.
As far as I know, there should be double bonds present at the ends of the repeating unit, so that the pi bond can break and allow the formation of additional bonds, and hence, a chain of molecules. However, using that line of thought I cannot seem to figure out the answer to the question.
I just need a direction, a hint or a clue as to how I should approach problems like such.
polymers
edited 9 hours ago
Karsten Theis
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
$endgroup$
add a comment |
$begingroup$
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CONHCH2CH2NHCOenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CONHCH2NHCOenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2NHenclosehorizontalstrike)$
I came across this question which requires me to find the structure of the repeating unit of the polymer made by the reaction of two different compounds. However, I am not sure as to which repeating unit would suffice for this particular polymer.
As far as I know, there should be double bonds present at the ends of the repeating unit, so that the pi bond can break and allow the formation of additional bonds, and hence, a chain of molecules. However, using that line of thought I cannot seem to figure out the answer to the question.
I just need a direction, a hint or a clue as to how I should approach problems like such.
polymers
edited 9 hours ago
Karsten Theis
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
$endgroup$
4
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago
add a comment |
$begingroup$
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CONHCH2CH2NHCOenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CONHCH2NHCOenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2NHenclosehorizontalstrike)$
I came across this question which requires me to find the structure of the repeating unit of the polymer made by the reaction of two different compounds. However, I am not sure as to which repeating unit would suffice for this particular polymer.
As far as I know, there should be double bonds present at the ends of the repeating unit, so that the pi bond can break and allow the formation of additional bonds, and hence, a chain of molecules. However, using that line of thought I cannot seem to figure out the answer to the question.
I just need a direction, a hint or a clue as to how I should approach problems like such.
polymers
edited 9 hours ago
Karsten Theis
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
$endgroup$
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CONHCH2CH2NHCOenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CONHCH2NHCOenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NHCOCH2NHenclosehorizontalstrike)$
I came across this question which requires me to find the structure of the repeating unit of the polymer made by the reaction of two different compounds. However, I am not sure as to which repeating unit would suffice for this particular polymer.
As far as I know, there should be double bonds present at the ends of the repeating unit, so that the pi bond can break and allow the formation of additional bonds, and hence, a chain of molecules. However, using that line of thought I cannot seem to figure out the answer to the question.
I just need a direction, a hint or a clue as to how I should approach problems like such.
polymers
polymers
edited 9 hours ago
Karsten Theis
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
edited 9 hours ago
Karsten Theis
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
edited 9 hours ago
Karsten Theis
4,067542
edited 9 hours ago
Karsten Theis
4,067542
edited 9 hours ago
Karsten Theis
4,067542
4,067542
asked 12 hours ago
Selena CarlosSelena Carlos
517
asked 12 hours ago
Selena CarlosSelena Carlos
517
asked 12 hours ago
Selena CarlosSelena Carlos
517
517
4
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago
add a comment |
4
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago
4
4
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
You are starting out with amino groups on one monomer and carboxylate groups on the other monomer. As William R. Ebenezer states in the comment, these combine via condensation (to form an amide, which is written as -NHCO- or -CONH- in condensed formulas). 
The linkages in the answer choices between repeating units are not visible until you write another repeating unit next to the ones shown. A. and B. show amide linkages between repeating units, while C. and D. show something else.
Here is the exercise rewritten to emphasize the amide bonds in the repeating units:
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CO-NHCH2CH2NH-COenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CO-NHCH2NH-COenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2NHenclosehorizontalstrike)$
Now that we emphasized the amide linkages, you can see that the first monomer in A, the second monomer in C and the second monomer in D don't match your starting materials. We can also exclude C. and D. because repeating units are not linked via amides. The answer has to be B.
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "431"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fchemistry.stackexchange.com%2fquestions%2f112261%2ffinding-the-repeating-unit-of-polymerisation-given-two-constituent-molecules%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
You are starting out with amino groups on one monomer and carboxylate groups on the other monomer. As William R. Ebenezer states in the comment, these combine via condensation (to form an amide, which is written as -NHCO- or -CONH- in condensed formulas).
The linkages in the answer choices between repeating units are not visible until you write another repeating unit next to the ones shown. A. and B. show amide linkages between repeating units, while C. and D. show something else.
Here is the exercise rewritten to emphasize the amide bonds in the repeating units:
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CO-NHCH2CH2NH-COenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CO-NHCH2NH-COenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2NHenclosehorizontalstrike)$
Now that we emphasized the amide linkages, you can see that the first monomer in A, the second monomer in C and the second monomer in D don't match your starting materials. We can also exclude C. and D. because repeating units are not linked via amides. The answer has to be B.
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
$endgroup$
add a comment |
$begingroup$
You are starting out with amino groups on one monomer and carboxylate groups on the other monomer. As William R. Ebenezer states in the comment, these combine via condensation (to form an amide, which is written as -NHCO- or -CONH- in condensed formulas).
The linkages in the answer choices between repeating units are not visible until you write another repeating unit next to the ones shown. A. and B. show amide linkages between repeating units, while C. and D. show something else.
Here is the exercise rewritten to emphasize the amide bonds in the repeating units:
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CO-NHCH2CH2NH-COenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CO-NHCH2NH-COenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2NHenclosehorizontalstrike)$
Now that we emphasized the amide linkages, you can see that the first monomer in A, the second monomer in C and the second monomer in D don't match your starting materials. We can also exclude C. and D. because repeating units are not linked via amides. The answer has to be B.
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
$endgroup$
add a comment |
$begingroup$
You are starting out with amino groups on one monomer and carboxylate groups on the other monomer. As William R. Ebenezer states in the comment, these combine via condensation (to form an amide, which is written as -NHCO- or -CONH- in condensed formulas).
The linkages in the answer choices between repeating units are not visible until you write another repeating unit next to the ones shown. A. and B. show amide linkages between repeating units, while C. and D. show something else.
Here is the exercise rewritten to emphasize the amide bonds in the repeating units:
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CO-NHCH2CH2NH-COenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CO-NHCH2NH-COenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2NHenclosehorizontalstrike)$
Now that we emphasized the amide linkages, you can see that the first monomer in A, the second monomer in C and the second monomer in D don't match your starting materials. We can also exclude C. and D. because repeating units are not linked via amides. The answer has to be B.
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
$endgroup$
You are starting out with amino groups on one monomer and carboxylate groups on the other monomer. As William R. Ebenezer states in the comment, these combine via condensation (to form an amide, which is written as -NHCO- or -CONH- in condensed formulas).
The linkages in the answer choices between repeating units are not visible until you write another repeating unit next to the ones shown. A. and B. show amide linkages between repeating units, while C. and D. show something else.
Here is the exercise rewritten to emphasize the amide bonds in the repeating units:
The compounds $ceH2NCH2CH2NH2$ and $ceHOOCCH2COOH$ react to form a polymer. What is the structure of the repeating unit of the polymer?
A. $requireencloseceenclosehorizontalstrike(HNCH2CO-NHCH2CH2NH-COenclosehorizontalstrike)$
B. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2COenclosehorizontalstrike)$
C. $ceenclosehorizontalstrike(OCCH2CO-NHCH2NH-COenclosehorizontalstrike)$
D. $ceenclosehorizontalstrike(HNCH2CH2NH-COCH2NHenclosehorizontalstrike)$
Now that we emphasized the amide linkages, you can see that the first monomer in A, the second monomer in C and the second monomer in D don't match your starting materials. We can also exclude C. and D. because repeating units are not linked via amides. The answer has to be B.
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
edited 8 hours ago
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
answered 9 hours ago
Karsten TheisKarsten Theis
4,067542
4,067542
add a comment |
add a comment |
Thanks for contributing an answer to Chemistry Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fchemistry.stackexchange.com%2fquestions%2f112261%2ffinding-the-repeating-unit-of-polymerisation-given-two-constituent-molecules%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
4
$begingroup$
What you are mentioning is addition polymerization which malonic acid and ethylenediamine wouldn't dream of doing. Condensation occurs, rather.
$endgroup$
– William R. Ebenezer
12 hours ago
$begingroup$
Draw out the skeletal structures with different colors so you can see how the building blocks combine. If you have monomers A and B, and A can't link with A and B can't link with B, the only polymer you can get is A-B-A-B-A...
$endgroup$
– Karsten Theis
9 hours ago
$begingroup$
"As far as I know, there should be double bonds present at the ends of the repeating unit"; This is not correct.
$endgroup$
– A.K.
5 hours ago