Chemistry unit 4 AQA

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Original post by jwells

1.77
5 and 2 is what i got

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

On question 1 what letter did people put for the graphs? I put E?

Original post by LoL19

for the mass spec i got 4 hydroxy 4 methyl pentan-2-one

Which question was this? Can't remember having to name something like that :/

what did everyone call the common names for the polyester and the polyamide? i was confused with this, so just guessed and put 'teflon' and 'kelvar'

Original post by ps3g4m3r

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

You're missing the carbon under the methyl group. So it's 5.

Original post by ps3g4m3r

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

Dont forget the actually CH3 carbon. That makes 5.

Original post by ps3g4m3r

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

1
2
3,7
4,6
5

Original post by irishluck

Either ACDB or ADCB forget which I put, pretty confident it was right!

yes... I think I got ACDB, but finding it very hard to remember! Definitely one of those two though

I put NaOH for step 2 on q8, is that incorrect?

Original post by ps3g4m3r

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

C in methyl group
C just below
2C on side NO2
2C just below
C on other NO2

5

I definitely got the last question wrong, like molecules and 2/3 of the mechanisms. If I put the right reducing agent will I still get the mark you think?
People at my school said that instead of HBr for the last one, it should have been Br2 because there was two moleucles of Br? Which confused me as I'd put HBr ... hmmmm

Original post by LoL19

for the mass spec i got 4 hydroxy 4 methyl pentan-2-one

I got that

Original post by ps3g4m3r

using carbon 1 as the methyl carbon and numbering clockwise, carbon peaks are
1
2and6
3and5
4
?

methyl carbon, carbon just below methyl carbon (call that carbon 1), carbons 2 and 6, carbons 3 and 5, carbon 4 = 5

Original post by irishluck

Which question was this? Can't remember having to name something like that :/

No you didnt have to name it. It was the one where you had to use the Hnmr spec data to deduce the compound. I cba to draw it out so i just wrote the formulae.

Original post by sarah-madeline

what did everyone call the common names for the polyester and the polyamide? i was confused with this, so just guessed and put 'teflon' and 'kelvar'

I did Tereylene and Kevlar, not sure if I spelt them right though lol.. :tongue:

:tongue:

Original post by Reminisce

C in methyl group
C just below
2C on side NO2
2C just below
C on other NO2

5

of course yes, forgot the c in the methyl group stupidly

Original post by sarah-madeline

Original post by sarah-madeline

what did everyone call the common names for the polyester and the polyamide? i was confused with this, so just guessed and put 'teflon' and 'kelvar'

i put kevlar and terylene :smile:

:smile:

Original post by izzwizz

On question 1 what letter did people put for the graphs? I put E?

I think I put G?

someone attempt a mark scheme? please :smile:

:smile:

Original post by Rahul.S

doing it in june brudda :colone:

:colone:

ur 120 will be waiting. :colone:

:colone:

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