I had A for that: asthe one with OH has the highest boiling point because of hydrogen bonding, the one with the fluorine is polar so it's second strongest and the one with the CH3 is last because it only has Van der Waal's.

Reply 46

Gallo123

Original post by James1405

I had A for that: asthe one with OH has the highest boiling point because of hydrogen bonding, the one with the fluorine is polar so it's second strongest and the one with the CH3 is last because it only has Van der Waal's.

it went ch3 oh f
fluorine is polar and hydrogen bonds aswell

Reply 47

Gallo123

does anyone know if refluxing the alcohol went to aldehyde or acid??

Reply 48

Dj-in-da-house

8

Original post by Somebody503

Oh yes what did everyone get for that?? Think i may have messed that up! I looked at atomic numbers?

I said stuff like 2 different groups on the C and talked about the highest priority groups being on the same side don't have a clue! -.-

Reply 49

James1405

6

Original post by Gallo123

it went ch3 oh f
fluorine is polar and hydrogen bonds aswell

Damn, I never thought of that. From memory I think that the fluorine has to have a hydrogen actually attached to it for it to H bond but I am pretty sure that your right.

Reply 50

Dj-in-da-house

8

Original post by Gallo123

does anyone know if refluxing the alcohol went to aldehyde or acid??

It was a primary alcohol so I said it went to a carboxylic acid but I think aldehyde is also acceptable :smile:

Reply 51

James1405

6

Original post by Gallo123

does anyone know if refluxing the alcohol went to aldehyde or acid??

It goes to acid. I ended up with my organic product being COOHCOOH (two carbons each with a -OH branch and a =O branch)

Reply 52

Somebody503

OP

Why was that product the major product? If you know which q i mean haha

Reply 53

Frank the Tankk

12

Original post by Gallo123

it went ch3 oh f
fluorine is polar and hydrogen bonds aswell

Fluroethane boiling point: -37.1
Ethanol boiling point: 78.4

Reply 54

Frank the Tankk

12

Original post by Somebody503

Why was that product the major product? If you know which q i mean haha

It's to do with the position of the carbocation I think.

Reply 55

Gallo123

Original post by Frank the Tankk

Fluroethane boiling point: -37.1
Ethanol boiling point: 78.4

sheeeeit

Reply 56

Gallo123

does anyone recon there will be follow through marks for the molar gas volume question?

Reply 57

pijips

Apparently the organic product of the esterification reaction was a diester, which I've never even heard of...

Reply 58

LadyEcliptic

20

You learn more about diols at A2 level (polymerisation of diols and dicarboxylic acids/acid chlorides)

The enthalpy question caught me off guard, I thought it was incredibly mean.

The first 10 multiple choices were a breeze and give me false hope for the rest of the paper :unimpressed:

Reply 59

LadyEcliptic

20

The major and minor products is to do with where the hydrogen adds on - if it adds on to the carbon of the c=c that has the highest number of hydrogen a attached (in which case it was 2) then that is the major product.

Chemistry AS2 CCEA 17th June 2014

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