Post by: holtadit on November 02, 2009, 01:09:13 pm
_
HO-l_l-OH
Draw the structure of a more complex carbohydrate that can be formed from
glucose by condensation polymerisation.
How do u answer this question ? What is the answer ?
Post by: @d!_†oX!© on November 02, 2009, 01:31:49 pm
_ _
(-l_l-O-l_l-)n
u just have to remove the hydrogen from both side and continue it from both side.....this will show an ester grouping which is what a carbohydrate is made up of....
Post by: Saladin on November 02, 2009, 01:34:39 pm
it does not matter whether it i glucose or ethene
u simply break the double bond.
then extend it past the brackets
then put n at the end.
thats all there is to it.
Post by: holtadit on November 02, 2009, 01:38:09 pm
Post by: @d!_†oX!© on November 02, 2009, 01:40:49 pm
Post by: eightAs on November 02, 2009, 01:42:58 pm
it will be_ _
_ _
(-l_l-O-l_l-)n
u just have to remove the hydrogen from both side and continue it from both side.....this will show an ester grouping which is what a carbohydrate is made up of....
Starch is not an ester. Fats have ester linkage. Remember ester linkage is (-l_l-OCO-l_l-). Ester link requires both Carboxyl group and the Alcohol group to be present in the monomer(s).
Post by: @d!_†oX!© on November 02, 2009, 01:51:01 pm
ok chill man!!!!!
i m sorry for writing so...just slipped away from my mind!!!
ps eightas wud u mind talking a bit more politely plsss....i saw u on the other thread as well(A*)
its cool that u know the stuff and u are trying to correct people for their benefit...but it wud better if u used a rather softer tone!!!
dont take it personally...its just an advice...rest is upto u!! :)
Post by: eightAs on November 02, 2009, 02:02:26 pm
YAYA!!!!!8) :D ;D :) I did not intend to offend you dude. I apologize if you have been offended. But I just wanted to correct you, but why do you find it offensive. Yeah. Okay, I'll remove "Wong". That was quite unnecessary.
ok chill man!!!!!
i m sorry for writing so...just slipped away from my mind!!!
ps eightas wud u mind talking a bit more politely plsss....i saw u on the other thread as well(A*)
its cool that u know the stuff and u are trying to correct people for their benefit...but it wud better if u used a rather softer tone!!!
dont take it personally...its just an advice...rest is upto u!! :)
Post by: @d!_†oX!© on November 02, 2009, 02:05:43 pm
nthng with the "WRONG"...
its just that ur tone seemeed to be quite harsh so i told ya...not much here but in the other post...it was way too harsh...
told ya in gud intentions man!!! :) :)
Post by: Ghost Of Highbury on November 02, 2009, 02:50:47 pm
Glucose can be represented as
_
HO-l_l-OH
Draw the structure of a more complex carbohydrate that can be formed from
glucose by condensation polymerisation.
How do u answer this question ? What is the answer ?
it shud be similar to the diagram attached
i know u guyz have answered it, but still for a diagram
and yea...as it is condensation polymerization, the bi-product would be x-molecules of water ..find it attached ...
if y is the number of glucose molecules which combine to form the polysaccharide....
x = y-1
that means there will be y-1 molecules of water formed
Post by: @d!_†oX!© on November 02, 2009, 02:54:30 pm
but i think u shud change the middle carbon containing molecule to a box...it luks more like 3 O's together
Post by: Ghost Of Highbury on November 02, 2009, 03:04:13 pm
neat diagram aadi...
but i think u shud change the middle carbon containing molecule to a box...it luks more like 3 O's together
edited. guess u guyz 4got abt water.. :P
Post by: @d!_†oX!© on November 02, 2009, 03:08:49 pm
bt i realise i shud have sadi that too for a complete answer...
Post by: holtadit on November 04, 2009, 12:52:54 pm
AND
Can someone also draw the displayed structural formula of Poly(propene) ?
Thanks ppl.
Post by: holtadit on November 04, 2009, 01:20:28 pm
Read the above post.
Post by: ~~~~shreyapril~~~~ on November 04, 2009, 01:22:17 pm
stucture on its way!!
Post by: Ghost Of Highbury on November 04, 2009, 01:24:36 pm
could someone draw the displayed structural formula of the compound formed when propene reacts with hydrogen chloride.
AND
Can someone also draw the displayed structural formula of Poly(propene) ?
Thanks ppl.
when propene reacts with HCl!!
i'm not sure of that...did u mean when it reacts with chlorine or bromine instead of HCl
and eya for the second one
find the diagram attached
Post by: ~~~~shreyapril~~~~ on November 04, 2009, 01:30:11 pm
it is CH2CH CH3 + HCl = CH3CHClCH3
DIAGRAM ATTACHED!!!
Post by: @d!_†oX!© on November 04, 2009, 01:30:55 pm
Post by: Ghost Of Highbury on November 04, 2009, 01:32:03 pm
agreed aadi...it shud be propene with Cl2 which will give us C3H5Cl and HClyaa..true..
Post by: holtadit on November 04, 2009, 01:32:48 pm
and this is the structure i got for propene chloride (2nd attachment). I got two possible structures (one at the top and one at the bottom of the picture).
so which is correct ?
Post by: ~~~~shreyapril~~~~ on November 04, 2009, 01:33:18 pm
it can be as i said also rite???
wait i guess diagram is wrong!!
i'll update it!!
Post by: Ghost Of Highbury on November 04, 2009, 01:34:42 pm
but ari, i'mnot sure abt the propene + acid...t shud be ...propene + chlorine...check th q again..which year is it?
Post by: holtadit on November 04, 2009, 01:39:37 pm
Quote
yes, u can draw that way too..
but ari, i'mnot sure abt the propene + acid...t shud be ...propene + chlorine...check th q again..which year is it?
Go to Question 7 c iii
The MS is attached too.
Post by: @d!_†oX!© on November 04, 2009, 01:48:01 pm
it says "Give the structural formula and name of the alcohol formed when but-1-ene reacts
with steam."
r u sure this is the one??
Post by: holtadit on November 04, 2009, 01:51:39 pm
Its triple i not double i
Post by: holtadit on November 04, 2009, 01:55:48 pm
Quote
7 c)ii) is different in the question ppr provided...
it says "Give the structural formula and name of the alcohol formed when but-1-ene reacts
with steam."
r u sure this is the one??
Did u get the right question now ???
Post by: @d!_†oX!© on November 04, 2009, 02:03:01 pm
will let u know in some time!!
Post by: holtadit on November 04, 2009, 02:04:48 pm
:D ;)
Post by: @d!_†oX!© on November 04, 2009, 02:06:40 pm
Post by: holtadit on November 04, 2009, 02:56:46 pm
Post by: @d!_†oX!© on November 05, 2009, 01:15:55 pm
so yeah...i saw the question...so basically...the diagram that u have made on the last page are correct...both are correct as they are isomers so both will be accepted for sure.....
ur second question....poly(butene)
its simple u just take butene....nd remove the double bond...here is a daigram
H H H
| | |
H-C-C=C-C-H this is butene
| | |
H H H
now rearrange this to move the last methyl group (CH3) below and transfer one of the double bonds to the right to make it a continuous chain
H H
| |
(-H- C -C - C -)n this is poly(butene)
| | |
H H H-C-H
|
H
or this can be simply written as
(-CH3-CH2CH-)n
|
CH3
Post by: holtadit on November 05, 2009, 02:38:43 pm
If it is WRONG then explain to me how u got the CH3 for poly(propene) and how i should be drawing the repeat units for polymers.
Post by: Ghost Of Highbury on November 05, 2009, 02:44:16 pm
ok look at the diagram
the first when the first CH2 is put from
next one has a C with a H bond on top and methyl at the bottom
When the C and H bond is drawn from
to form a polymer just remove the double bond and extend the lines outside
Post by: @d!_†oX!© on November 05, 2009, 02:46:43 pm
Post by: Ghost Of Highbury on November 05, 2009, 02:48:13 pm
lol...nice name dude...ari ari ari.bmp !!!lol
lol..actually i want to dedicate that song to my friend ari...
@ari - listen to this song -> bombay rockers - ari ari ari
i'm not kiddin , it is a song..check it..no offence :D
Post by: holtadit on November 05, 2009, 02:51:16 pm
Quote
lol..actually i want to dedicate that song to my friend ari...
@ari - listen to this song -> bombay rockers - ari ari ari
i'm not kiddin , it is a song..check it..no offence :D
Ill check the song out.
But is my diagram of poly(butene) correct ? because i followed the same method that A@di just explained.
Post by: @d!_†oX!© on November 05, 2009, 02:53:13 pm
Post by: Ghost Of Highbury on November 05, 2009, 02:53:21 pm
Ill check the song out.
But is my diagram of poly(butene) correct ? because i followed the same method that A@di just explained.
yes ari , that shud be correct..
but lemme suggest u something
always...a methyl group i.e
for that just make one more CH2 and insttad of an ethyl hanging make it to a methyl
Post by: @d!_†oX!© on November 05, 2009, 02:55:42 pm
Post by: holtadit on November 05, 2009, 02:58:05 pm
Quote
yes ari , that shud be correct..
but lemme suggest u something
always...a methyl group i.e CH_3 is better to show in a polymer than an ethyl i.e C_2H_5 or any other alkyl
for that just make one more CH2 and insttad of an ethyl hanging make it to a methyl
Point noted. Sorry for asking so many questions guys and thanks for helping me out. But i have one last question:
Is this the correct diagram for the following question?
The synthetic polymer, nylon, has the same linkage as proteins. Draw the structural
formula of nylon.
Post by: nid404 on November 05, 2009, 03:01:42 pm
Post by: @d!_†oX!© on November 05, 2009, 03:05:30 pm
just put a dash(-) on the 2 brackets on the side to show continuation....
Post by: holtadit on November 05, 2009, 03:12:36 pm
Post by: nid404 on November 05, 2009, 03:13:42 pm
Post by: @d!_†oX!© on November 05, 2009, 03:15:05 pm
Post by: Ghost Of Highbury on November 05, 2009, 03:15:41 pm
wait , i'll upload my image somewhere ..its taking time here...
check this link
i have uploaded the image here
http://filesmelt.com/downloader/ari_ari_ari.bmp
Post by: nid404 on November 05, 2009, 03:17:11 pm
Why does nid404 say that the double bonds break open ???
sryy I mistook it for a normal polyester such as ethene...ws in a hurry,..wanted to go for dinner :D......so the double bond implied was for somethin like polyethene where it splits open...and becomes single
Post by: @d!_†oX!© on November 05, 2009, 03:19:19 pm
@nid , adi etc. - 1 doubt plz...there r 2 different boxes right in nylon..i mean how can CO and NH be round 1 box..dude...although this is not in course bt just to let u know..
wait , i'll upload my image somewhere ..its taking time here...
check this link
i have uploaded the image here
http://filesmelt.com/downloader/ari_ari_ari.bmp
Nylon-6 has only one box cuz its monomer Caproic acid has both amide and carboxylic grouping...
the one that u have drwan is Nylon-6,6
Post by: Ghost Of Highbury on November 05, 2009, 03:20:44 pm
sryy I mistook it for a normal polyester such as ethene...ws in a hurry,..wanted to go for dinner :D......so the double bond implied was for somethin like polyethene where it splits open...and becomes single
plzz answer my doubt
how can it be CO[ ]NH
it shud be ----CO[ ]CO-NH{}NH-------
@adi - did ari mention abt nylon-6 or nylon6,6 ??
Post by: holtadit on November 05, 2009, 03:22:08 pm
Quote
sryy I mistook it for a normal polyester such as ethene...ws in a hurry,..wanted to go for dinner Cheesy......so the double bond implied was for somethin like polyethene where it splits open...and becomes single
plzz answer my doubt
how can it be CO[ ]NH
it shud be ----CO[ ]CO-NH{}NH-------
@adi - did ari mention abt nylon-6 or nylon6,6 ??
What A@di uploaded is correct... I just checked the IGCSE CHEM syllabus.
Post by: nid404 on November 05, 2009, 03:22:55 pm
Post by: Ghost Of Highbury on November 05, 2009, 03:24:00 pm
What A@di uploaded is correct... I just checked the IGCSE CHEM syllabus.
if u sure abt that..thank you!
dude..relax now,.u'll do good at chem..and listen to bombay rockers - ari ari ari...
if ur real name is ari u'll love the song :D
By the way..if u have more doubts..plz ask..we all r dere.. :D
@nid - arre yaar, maine book bhi check kiya..yeh CO dabba NH kar ke kuch hai hi nahi..it shud be 2 diff. boxes and then chain mein link karo,.,.
Post by: nid404 on November 05, 2009, 03:24:16 pm
Post by: Ghost Of Highbury on November 05, 2009, 03:24:59 pm
abbe nahi ur right...yeh nylon 66.barabar....side chains might be different....srry im worked up
chillax man!
and glad u confirmed it i'm right! ;D
Post by: holtadit on November 05, 2009, 03:31:34 pm
https://studentforums.biz/index.php/topic,4683.msg144616.html#msg144616
Post by: ~~~~shreyapril~~~~ on November 05, 2009, 04:04:48 pm
you do these questions within seconds!!
great man!!!
Post by: Ghost Of Highbury on November 05, 2009, 04:31:06 pm
dude!!
you do these questions within seconds!!
great man!!!
~thanks
Post by: ~~~~shreyapril~~~~ on November 05, 2009, 04:32:39 pm
By the way best luck for ur exams tmr!!!
Post by: Ghost Of Highbury on November 05, 2009, 04:39:27 pm
too good!!
By the way best luck for ur exams tmr!!!
~thanks again
Post by: ~~~~shreyapril~~~~ on November 05, 2009, 04:40:16 pm
and
welcome again!!!