How is your preperation for Chem Unit 2 ???

[xIshtar]

oh so just names i could use any r8 ?

oh umm but isnt chlorine n bromine has the same no. of electrons ?? why is iodobutane with a higher bt

Same number of valence electrons, different number of total electrons.

 

[xIshtar]

methanol reacts with Na ! so the bubbles tht form r wat ?? OH is the product ? n r all metal hydrocarbons white ppt ?

When methanol reacts with Na, Sodium Methoxide is formed, which is white. The sodium fizzes and gets smaller, effervescence is also seen as H2 is given off

 

[durr]

yes, but I don't use van dar waal. in the book it says van dar waal means london and permanent dipole-dipole

and from jan 12 er:
This candidate correctly identifies the main intermolecular force involved and the factor
which determines the magnitude of the force in these examples. Strictly speaking, van
der Waals forces is a general term that encompasses London forces and permanent dipole
interactions

 

[xIshtar]

yes, but I don't use van dar waal. in the book it says van dar waal means london and permanent dipole-dipole

and from jan 12 er:
This candidate correctly identifies the main intermolecular force involved and the factor
which determines the magnitude of the force in these examples. Strictly speaking, van
der Waals forces is a general term that encompasses London forces and permanent dipole
interactions

Thanks for the heads up

 

[DANGERBP]

Same number of valence electrons, different number of total electrons.

shit man total electrons affect ???
am gonna murder my teacher !!! -___-

 

[xIshtar]

shit man total electrons affect ???
am gonna murder my teacher !!! -___-

Total electrons effect because it increases the size

 

[DANGERBP]

yes, but I don't use van dar waal. in the book it says van dar waal means london and permanent dipole-dipole

and from jan 12 er:
This candidate correctly identifies the main intermolecular force involved and the factor
which determines the magnitude of the force in these examples. Strictly speaking, van
der Waals forces is a general term that encompasses London forces and permanent dipole
interactions

so what should i use ?? then ??

 

[DANGERBP]

Total electrons effect because it increases the size

the size of what the atom ? n so then wat ?

 

[xIshtar]

the size of what the atom ? n so then wat ?

Means there are more London Forces, and thus it is stronger.

 

[DANGERBP]

i need the diagram of the apparatus for preparing ethanol from ethanal ??

n we would be reducin ethanal in that r8 ? but we still use K2Cr2O7 ?? isnt that an oxidation agent that does change from ethanol to ethanal not the opposite ??

 

[DANGERBP]

Means there are more London Forces, and thus it is stronger.

size of the atom larger makes that you sure ??

 

[z3r0thunder]

Can someone please tell me everything what we have to know about London Forces, Instantaneous Dipoles and Induced Dipoles?

 

[xIshtar]

size of the atom larger makes that you sure ??

Yes, the greater number of electrons, the more polarisable it is, and thus it is more likely to form temporary dipoles.

 

[xIshtar]

Can someone please tell me everything what we have to know about London Forces, Instantaneous Dipoles and Induced Dipoles?

Basically, London Forces are the intermolecular forces that are the most common. They result from the uneven distribution of electrons, which forms a temporary dipole. This temporary dipole, then causes inducing or fleeting dipoles in the neighbouring molecules.

 

[z3r0thunder]

Basically, London Forces are the intermolecular forces that are the most common. They result from the uneven distribution of electrons, which forms a temporary dipole. This temporary dipole, then causes inducing or fleeting dipoles in the neighbouring molecules.

Thank You

 

[xIshtar]

Thank You

No problem, good luck!

 

[DANGERBP]

Yes, the greater number of electrons, the more polarisable it is, and thus it is more likely to form temporary dipoles.

thnk you so much ! i apreciate it much ! seriously =p

 

[DANGERBP]

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

 

[z3r0thunder]

No problem, good luck!

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

 

[z3r0thunder]

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

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