Edexcel Chemistry Unit 5 June 19 2012

Original post by TheAdrianoo789

The CH3s are not all in the same environment... they all have different sorroundings, so it's 4!!!

thats what im not getting ! why do we need to see CH3's environment ? dont we see only H's environment ?! well theres goes another mark for me...

Reply 1183

i said all three H bonds . dipole interactions and london forces....!! and then i explained all of them lol

Reply 1184

EffKayy

16

Original post by marc_h94

Yeah there were definitely H bonds. You had to specifically say dipole-dipole bonds due to the polar C=O.

So will they give 3 marks just for stating the intermolecular forces??

Reply 1185

Original post by iesians

thats what im not getting ! why do we need to see CH3's environment ? dont we see only H's environment ?! well theres goes another mark for me...

Did you not do NMR in Unit 4???
According to you how many peaks would pentanol give: CH3CH2CH2CH2CH2OH?

Reply 1186

Original post by TheAdrianoo789

Did you not do NMR in Unit 4???
According to you how many peaks would pentanol give: CH3CH2CH2CH2CH2OH?

in low = three peaks ! lol
kill meh noww !! :tongue:

Reply 1187

Original post by EffKayy

So will they give 3 marks just for stating the intermolecular forces??

and then the other 2 marks for explaining them !
like c=o group is polar so forms dipole
and N-H form H bonds ....

Reply 1188

EffKayy

16

Original post by iesians

in low = three peaks ! lol
kill meh noww !! :tongue:

Reply 1189

Original post by EffKayy

loool temme the answer genius !! :tongue:

Reply 1190

Original post by EffKayy

A rather fitting response.

Reply 1191

Original post by iesians

loool temme the answer genius !! :tongue:

its 6! all the CH2s are different distances from the OH thus their protons all interact with the magnetic field differently!!!

Reply 1192

ok so apparantly im doomed

Reply 1193

ohwellohwell

Its 100% 2 peaks for the question you;re all talking about. The Methyl groups were bounded to Nitrogen. So there are 9 hydrogens adjacent to a hydrogen. And one CH group (10 hydrogens in total) so two peaks ration 9:1. !!

Reply 1194

ohwellohwell

Wow do i wanna type any worse. Basically two peaks... One nine hydrogens.. Because 3 CH3's all bonded to nitrogen. And One CH Group. :smile:

Reply 1195

Original post by TheAdrianoo789

its 6! all the CH2s are different distances from the OH thus their protons all interact with the magnetic field differently!!!

ok then i was taught wrong the entire year !
AMSJHFHYRRGUFHBVJN OD !! :angry:

Reply 1196

Original post by ohwellohwell

Its 100% 2 peaks for the question you;re all talking about. The Methyl groups were bounded to Nitrogen. So there are 9 hydrogens adjacent to a hydrogen. And one CH group (10 hydrogens in total) so two peaks ration 9:1. !!

OH WELL !!!!! youre an angel !!!!!
AHHHHHHH HEAVEN ! i wrote 2 too !!
thank god im not crazy !! :colondollar:

Reply 1197