[Fatima0065]

What are the conditions needed for nitartion of benzene?

[otrivine]

(Original post by Fatima0065)
yep go on u start

right
Define: isoeletric point (2)
Define:zwiterrion (1)
and what happens if glycine is PH 1.6(2)

[Fatima0065]

(Original post by otrivine)
right
Define: isoeletric point (2)
Define:zwiterrion (1)
and what happens if glycine is PH 1.6(2)

oh i'm not good at teh definition but okai:
isolectric point: the point at which an amino acid acts as a zwitterion

zwiterrion: has no overall charge. the cooh group is acidic so loses a H+ and the nh2 is basic therefore gains a H+

if glyicine is at ph 1.6: it froms an NH3+ ion ??? (not sure)

[Fatima0065]

Definition for optical isomer:?

Why is it important that when forming a diazonium ion the temp is under 10C?

[otrivine]

(Original post by Fatima0065)
oh i'm not good at teh definition but okai:
isolectric point: the point at which an amino acid acts as a zwitterion

zwiterrion: has no overall charge. the cooh group is acidic so loses a H+ and the nh2 is basic therefore gains a H+

if glyicine is at ph 1.6: it froms an NH3+ ion ??? (not sure)

Good just the last part yes it forms NH3+ and forms C00-

[otrivine]

(Original post by Fatima0065)
Definition for optical isomer:?

Why is it important that when forming a diazonium ion the temp is under 10C?

optical isomer is where a carbon atom is attached to 4 other atoms/groups chiral carbon

it is important as it has to be its conditions and not to cause any side affects/not sure

[Fatima0065]

(Original post by otrivine)
Good just the last part yes it forms NH3+ and forms C00-

why coo- isn't that jsu in the alkaline conditions?

[Fatima0065]

(Original post by otrivine)
optical isomer is where a carbon atom is attached to 4 other atoms/groups chiral carbon

it is important as it has to be its conditions and not to cause any side affects/not sure

first one's correct but
2nd one: because the N2+ is unstable so any temp above 10c it would decompose to form phenol, n2 and h20

[otrivine]

(Original post by Fatima0065)
why coo- isn't that jsu in the alkaline conditions?

that was exactly what i was thinking but saw the jan 2012 paper and so for PH 1.6 they did NH3+ and COO-

[otrivine]

(Original post by fatima0065)
first one's correct but
2nd one: Because the n2+ is unstable so any temp above 10c it would decompose to form phenol, n2 and h20

thanks i did not know that

[Fatima0065]

in the presnece of excess ammonia when ffromig a halogenalkane which two products are formed
soory thats worded wrong excess amonia to a halogen alkane..what two products are formed?

[Fatima0065]

(Original post by otrivine)
thanks i did not know that

no problem

[Fatima0065]

(Original post by otrivine)
that was exactly what i was thinking but saw the jan 2012 paper and so for PH 1.6 they did NH3+ and COO-

oh do u know why?

[otrivine]

(Original post by Fatima0065)
in the presnece of excess ammonia when ffromig a halogenalkane which two products are formed
soory thats worded wrong excess amonia to a halogen alkane..what two products are formed?

oh my i have not revised that part yet is this chapter 1 ?

[Fatima0065]

otrivine..ur turn...

[otrivine]

(Original post by Fatima0065)
oh do u know why?

No to be honest ? but i just learned it has to be NH3+ AND COO - ?

[otrivine]

(Original post by Fatima0065)
otrivine..ur turn...

What are they doing to polymers to prevent landfill sites (2)

[Fatima0065]

(Original post by otrivine)
oh my i have not revised that part yet is this chapter 1 ?

its part of the page on amines

[Fatima0065]

(Original post by otrivine)
What are they doing to polymers to prevent landfill sites (2)

Making the biodegradable and photodegradable?

[Fatima0065]

Why is TMS used for proton NMR?