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OFFICIAL OCR F332 CHEMISTRY B (SALTERS) June 3rd 2014

It seemed to me like a lot of the those questions were just 'cut and paste' from the past papers. This is the first exam of this year I've actually felt happy with, hopefully that'll be reflected with my mark!

Reply 81

Bean man

If you think it was ethanoic acid have a look at o-h bonds IR spectroscopy on google. It's really not that hard. Jeez :angry:

Reply 82

Supergirlxxxxxx

2

Original post by Petick

It seemed to me like a lot of the those questions were just 'cut and paste' from the past papers. This is the first exam of this year I've actually felt happy with, hopefully that'll be reflected with my mark!

I so agree! Good job learnt all those answers from all the previous past papers! Also what did you get for that 7 marker? Really worried about it :/

Reply 83

Supergirlxxxxxx

2

Original post by Bean man

If you think it was ethanoic acid have a look at o-h bonds IR spectroscopy on google. It's really not that hard. Jeez :angry:

OMG but it was ethanoic acid!

Reply 84

Supermanxxxxxx

5

Original post by Supergirlxxxxxx

OMG but it was ethanoic acid!

Omg it was ethanoic acid like you have to be pretty dumb to think it's ethanol ,come on guys I'm Asian I think I know

Reply 85

JammyGit07

16

Original post by Supermanxxxxxx

Omg it was ethanoic acid like you have to be pretty dumb to think it's ethanol ,come on guys I'm Asian I think I know

Ethanal*

Peak wasn't broad enough :smile:

Reply 86

Supergirlxxxxxx

2

Original post by Supermanxxxxxx

Omg it was ethanoic acid like you have to be pretty dumb to think it's ethanol ,come on guys I'm Asian I think I know

Looool oh hey there superman you must be my perfect match, anyways get off this thread -.- you didn't even do the exam silly!

Reply 87

Supergirlxxxxxx

2

Original post by JammyGit07

Ethanal*

Peak wasn't broad enough :smile:

But it says Carboxylic acids M(broad) so like medium ish!

Reply 88

Supermanxxxxxx

5

Original post by Supergirlxxxxxx

Looool oh hey there superman you must be my perfect match, anyways get off this thread -.- you didn't even do the exam silly!

Lol I guess I'm your perfect match and I so do the exam the oxidation state of br is -1 right? That's the only mark I got right

Reply 89

Minecraft27

14

I'm almost certain it's ethanal.

Look at an image of the ethanal IR spectrum. It is an almost perfect match to the one on the exam.

(edited 9 years ago)

Reply 90

Floatable Binbag

What did you guys write for the 2 primary alcohols from Fig 1?

Reply 91

Supergirlxxxxxx

2

Original post by Supermanxxxxxx

Lol I guess I'm your perfect match and I so do the exam the oxidation state of br is -1 right? That's the only mark I got right

OMG ranveer :'( your so mean, you know I was annoyed about that!! Hate you LOADS.😡

Reply 92

Supergirlxxxxxx

2

Original post by Floatable Binbag

What did you guys write for the 2 primary alcohols from Fig 1?

I wrote fructose and retinal (vitamin A)

Reply 93

MadMO

for the two intermolecular forces question i put permanent dipole permanent dipole and instantaneous dipole induced dipole because i know that ketones do not form hydrogen bonds. and for the ethanol one i put ethanoic acid because there was a peak at around 3000cm^-1 and this means it cannot be ethanal no matter what because this peak is present, you cannot simply pretend like this peak doesn't exist and say its ethanal as it was quite a distinctive peak as well.

Reply 94

MadMO

Original post by Supergirlxxxxxx

I wrote fructose and retinal (vitamin A)

shouldn't it be retinol?

Reply 95

Minecraft27

14

Original post by MadMO

for the two intermolecular forces question i put permanent dipole permanent dipole and instantaneous dipole induced dipole because i know that ketones do not form hydrogen bonds. and for the ethanol one i put ethanoic acid because there was a peak at around 3000cm^-1 and this means it cannot be ethanal no matter what because this peak is present, you cannot simply pretend like this peak doesn't exist and say its ethanal as it was quite a distinctive peak as well.

What planet are you on? Ketons DO form hydrogen bonds. The functional group is an OXYGEN!!
Again, google the IR for ethanal. It's just like the one in the exam.

Reply 96

Supergirlxxxxxx

2

Original post by MadMO

shouldn't it be retinol?

Ah sorry yes! That's what I meant! What intermolecular bonds did you get for the 7 marker?

Reply 97

Ben6597

7

Original post by rubi-t

I feel stupid now. I got 26.6%

Omg I though the paper went well but I feel silly mistakes coming in already.

26 is right

Posted from TSR Mobile

Reply 98

MadMO

Original post by Minecraft27

What planet are you on? Ketons DO form hydrogen bonds. The functional group is an OXYGEN!!
Again, google the IR for ethanal. It's just like the one in the exam.