Edexcel CHEMISTRY DOUBTS!!!!

[NidZ- Hero]

K(s) + O2 ? KO2(s) how does this reaction happen i mean wat r de steps
?

[NotAbod]

Wat steps?

[EMO123]

K(s) + O2 ? KO2(s) how does this reaction happen i mean wat r de steps
?

2K_(s)+O₂-->2KO_(s)

[elemis]

2K_(s)+O₂-->2KO_(s)

Your equation is incorrect.

@Nidzz Potassium, being an alkali metal, is very reactive with the oxygen in the air.

Hence,

4K_(s)+O_2(g)-->2K₂O_(s)

[EMO123]

Your equation is incorrect.

@Nidzz Potassium, being an alkali metal, is very reactive with the oxygen in the air.

Hence,

4K_(s)+O_2(g)-->2K₂O_(s)

thanx ari

[red_911]

water has which types of intermolecular forces ?? n which has higher boiling point HF or h2O ? explain with reason plzz

[Amelia]

water has which types of intermolecular forces ?? n which has higher boiling point HF or h2O ? explain with reason plzz

Please refrain from double posting. Your question has been answered in the CIE chemistry thread.

[red_911]

Please refrain from double posting. You question has been answered in the CIE chemistry thread.

it doesnt come under double posting in purpose. since i have a chemistry test tomorrow i wanted the answer urgently but no one was giving it here so posted it on the other page.

[~ Miss Relina ~]

my doubts :
1. draw the double bond in terms of orbital overlap
2.why the strongest intermolecular forces  in hydrogen halides in liquid form like HCl is van der waals npt permanenet dipole-dipole
i thought of this because HCl is dipolar or does the liqiud means something else
3.why the config... of copper atomis 1s*2 2s*2 2p*6 3s*2 3p*6 3d*10 4s*1
istead of        1s*2 2s*2 2p*6 3s*2 3p*6 3d*9 4s*2     

[The Golden Girl =D]

my doubts :
1. draw the double bond in terms of orbital overlap
2.why the strongest intermolecular forces  in hydrogen halides in liquid form like HCl is van der waals npt permanenet dipole-dipole
i thought of this because HCl is dipolar or does the liqiud means something else
3.why the config... of copper atomis 1s*2 2s*2 2p*6 3s*2 3p*6 3d*10 4s*1
istead of        1s*2 2s*2 2p*6 3s*2 3p*6 3d*9 4s*2     

3. Because it is more stable in this case to have 10 electrons in the d-sub shell and only one electron in the 4s . not sure though but it's mainly cuz it's more stable.

[elemis]

it doesnt come under double posting in purpose. since i have a chemistry test tomorrow i wanted the answer urgently but no one was giving it here so posted it on the other page.

I dont care. Do not double post again.

[Malak]

Hey
Can anyone help me with the applications of nano-tubes?
I just need some brief uses of it.

Thx

[The Golden Girl =D]

water has which types of intermolecular forces ?? n which has higher boiling point HF or h2O ? explain with reason plzz

1.Hydrogen bonding since the O and H are bonded directly to each other.

2.the one with stronger bonding for sure but which one is it I'm not sure.

[Amelia]

Hey
Can anyone help me with the applications of nano-tubes?
I just need some brief uses of it.

Thx

Here

Hope it helps. 

[Malak]

^^ Thx

I am confused about something related to Dispersion forces and permanent dipoles..In the chemistry guide by NAS and even on a website for chemistry i have read that Permanent dipoles are weaker than dispersion forces.
The order is given as : Hydrogen bonding > dispersion (london forces) > permanent-dipole

But it other books the same order is given differently...It says that permanent dipoles have greater strength than dispersion forces..

I am not sure how I should treat it for Edexel exams??

Can anyone help with it??