How is your preperation for Chem Unit 2 ???

[xIshtar]

Do I have to know to describe this in any kind of question?

You will have to describe trends based on intermolecular forces I think.

the rxn involving phosphorus (III) iodide to form haloalkane ? whats everything we need to know bout this ?? O.O

Hmm.. just know products, and that steamy fumes are produced, which turn white with ammonia, as the ammonium salt is formed.

 

[DANGERBP]

2P (Red Phosphorus) + 3I2 > 2PI3
HalogenoAlkane + PI3 > IodoAlkane + H3PO3
Balancing is required

thbk you !
do we need to know umm if we need to heatr or add a catalyst or stuff like tht ?

 

[DANGERBP]

waaaaaaaat O.O

You will have to describe trends based on intermolecular forces I think.



Hmm.. just know products, and that steamy fumes are produced, which turn white with ammonia, as the ammonium salt is formed.

 

[z3r0thunder]

No catalyst is needed
Just the Steamy White Fumes formed when put with Ammonia Fumes a white precipitate forms.

 

[durr]

when OH attacks 1-bromobutane, the reaction proceeds via sn2 reaction.
activated complex is formed (carbon bonded to 5 elements), do we add charge on it?

 

[DANGERBP]

when OH attacks 1-bromobutane, the reaction proceeds via sn2 reaction.
activated complex is formed (carbon bonded to 5 elements), do we add charge on it?

ugh isnt tht sn1 ?? am sure it was ? well maybe just for me ? =$

 

[z3r0thunder]

Yes, it is necessary to add a "-" sign on the complex.
Complex must be in square brackets.

SN1 shows the removal of the Halogen and the ADDITION of the OH- group

 

[durr]

thanks.

 

[DANGERBP]

hey guyz look this one >>> HC(CL)(BR)C(F3)
its a chlorofluorocarbon what r the bonds to it ??

 

[Wearewhoweare]

that's what I think, because Metal + acid --> salt + hydrogen

No actually metal + acid ---> salt + water :s

 

[z3r0thunder]

hey guyz look this one >>> HC(CL)(BR)C(F3)
its a chlorofluorocarbon what r the bonds to it ??

C-Cl
C-F
C-Br
C-H

 

[DANGERBP]

C-Cl
C-F
C-Br
C-H

nd the intermolecular forces then ??

 

[DANGERBP]

AGNO3 + br- > wat r the products ??
n its the same with all halogens r8 ?

 

[DANGERBP]

guyzzzz @!!!! plzzz =/=/=/ !
plus this the hydrolysis of C2H5Cl will produce C2H5Oh r8 ?? hows that ?? reduction ??

 

[Shoggaine]

How was the paper for you guyz??

 

[xIshtar]

It was okay. I messed up a 3mark question due to nerves.. Went in completely the wrong direction. Rest of the paper was okay though.

Sections A and C were nice

 

[U stalking ME]

It was okay but last question was such a pain :/

 

[schoolation]

What was the shape of the intermediate Y ?

 

[U stalking ME]

What was the shape of the intermediate Y ?

trigonal planar, carbocation forms 3 bond pairs

 

[schoolation]

OHHH GOOODDD!! I messed that up