a level chemistry question

hii i was wondering if anyone could help me out with some questions that I had?
- in my CGP book it says that some poly alkanes can have dipole dipole boning, but couldn't they also have hydrogen bonding?
- during the oxidation fo alcohols, the solution is supposed to turn orange to green? but can't they also turn blue? ive heard somewhere that they do, when does this happen?
also, does it turn from orange to green whenever there's an oxidation? so when an alkene is turned into an aldehyde it turns green? and also when the aldehyde is turned into a carboxylic acid?
- im a bit confused about the Fehlings solution test. In my notes, it says that it contains Cu 2+ ions. the aldehydes then oxidise to form Cu2O complexes, but how is that oxidising the aldehydes if the Cu is gaining the oxygen? is that makes sense??

Thank you in advance!! rly appreciate it

hii i was wondering if anyone could help me out with some questions that I had?
- in my CGP book it says that some poly alkanes can have dipole dipole boning, but couldn't they also have hydrogen bonding?
- during the oxidation fo alcohols, the solution is supposed to turn orange to green? but can't they also turn blue? ive heard somewhere that they do, when does this happen?
also, does it turn from orange to green whenever there's an oxidation? so when an alkene is turned into an aldehyde it turns green? and also when the aldehyde is turned into a carboxylic acid?
- im a bit confused about the Fehlings solution test. In my notes, it says that it contains Cu 2+ ions. the aldehydes then oxidise to form Cu2O complexes, but how is that oxidising the aldehydes if the Cu is gaining the oxygen? is that makes sense??

Thank you in advance!! rly appreciate it

In order:

Only N,O,F can form hydrogen bonds (with hydrogen) because of their electronegativity

No idea, never heard that, ur probs thinking of a different reaction. Oxidation with acidified potassium dichromate as an oxidising agent does orange to green.

The colour change is due to the recuction of the dichromate.

Oxidation isn't gain of oxygen, it's loss of electrons. Cu2O means that (as oxygen has an oxidation state of -2) the Cu2+ has become Cu1+. This is a reduction as the oxidation state has been reduced.

1. could you get poly alcohols???

thank you about the rest!! xx

1. could you get poly alcohols???

thank you about the rest!! xx

I am not totally sure what you mean by your Q?

Can you polymerise an alcohol, e.g. ethanol? No.

You can polymerise ethenol, though - normal addition polymerisation ala ethene.

You can do condensation polymerisation with a diol, e.g. ethane-1,2-diol, if you mix it will a dicarboxlic e.g. ethanedioic acid.

Alcohols do form hydrogen bonds because they have an oxygen with unbonded electrons. Idk about Polyalcohols. I'm not sure that they exist in the way you may be imagining it as they can't form condensation or addition polymers so aren't needed at A level, at least as far as my AQA spec goes.

Thank you!! So if you polymerise ethanol can you get hydrogen bonding btwn chains?? xxx

You can't polymerise ethanol. If you made poly(ethenol) then you would get H-bonds between chains.

And less the kisses, the wife will complain.