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OCR Chemistry F322~ 4th June 2013~ AS Chemistry

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Original post by Monkeys!
A little bit late, but thank you SOOOOOOOOO much!


its alright :smile:
Reply 1381
Avatar for Cerelaaa
Cerelaaa
Original post by jazzynutter


Alkane → CO2 + H2O
Alkane → Halogenoalkane
Alkane → Alkane + Alkene
Alkane → Cycloalkane
Alkane → Branched Alkane
Alkene → CO2 + H2O
Alkene → Monohalogenated alkane
Alkene → Dihalogenated alkane
Alkene → Alkane
Alkene → Alcohol
Alkene → Poly(Alkene)
Alcohol → CO2 + H2O
Alcohol → Ester
Alcohol → Aldehyde
Alcohol → Carboxylic Acid
Alcohol → Ketone
Alcohol → Alkene
Glucose → Alcohol
Halogenoalkane → Alcohol
Halogenoalkene → Poly(Halogenoalkene)

Ta-daaaaa! :biggrin:


Fabb! Thank you! There are far too many reactions to learn!
Original post by jazzynutter
I know this because I used to make the same mistake on every single past paper..... for example, the oxidation product the last time I made this mistake was CH3CH2CH2COOH, and on the right hand side it specifically said not to accept C3H7COOH. These particular equations are always two marks, so I was limited to one because of that.


how comes you decided to oxidise it to an acid, did you not see if the question said reflux or distil? or did you just assume they would all go to acid?
Original post by needtosucceed=)
yep you would, you asked me this yesterday as well, you probably missed the quote lol


Haha sorry, probably because so many people were posting I didn't see it. Thanks anyway :biggrin:


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Original post by Jimmy20002012
Haha sorry, probably because so many people were posting I didn't see it. Thanks anyway :biggrin:


Posted from TSR Mobile


lol no problem :smile:
do we have to knw how the apparatus is set up for the oxidation of primary alcohols into aldehydes and carboxylic acids?
Original post by junaid_k17
do we have to knw how the apparatus is set up for the oxidation of primary alcohols into aldehydes and carboxylic acids?


Not how it works, just to know distillation and reflux for particular oxidation of alcohols :smile:


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Original post by needtosucceed=)
yep you would, you asked me this yesterday as well, you probably missed the quote lol


anyone have the jan 2013 paper and mark scheme?
Reply 1388
Avatar for Sum786
Sum786
Can someone please help me with steroisomers? question 3iv on jan 13 paper??
THANKS IN ADVANCE
(edited 10 years ago)
GUYS please help... i don't get isomers.. of alkenes specially the ones they genrally ask like even in Jan 2013 and Jan 2012 papper

5dii <----Jan 12
3a iv <----Jan 13

THANK YOU VERY MUCH
Original post by needtosucceed=)
how comes you decided to oxidise it to an acid, did you not see if the question said reflux or distil? or did you just assume they would all go to acid?


My point is that both of those formulae technically represent exactly the same thing, but they needed to see the structural formula to see that you fully understood where the functional group went! (The question was reflux of a primary alcohol)
Original post by Legal drugdealer
anyone have the jan 2013 paper and mark scheme?


I have added it in the OP :smile:


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Original post by Cerelaaa
Fabb! Thank you! There are far too many reactions to learn!


Alkene can form co2 + H2o???? :confused:
Original post by Sum786
Can someone please help me with steroisomers? question 3iv on jan 12 paper??
THANKS IN ADVANCE



LOL that's what i put up lloll a the same time as you :tongue:
Original post by Jacksgap
Alkene can form co2 + H2o???? :confused:


I think that's just referring to combustion :smile:

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Original post by Sum786
Can someone please help me with steroisomers? question 3iv on jan 12 paper??
THANKS IN ADVANCE


theres no 3iv on the paper?
Original post by jazzynutter
My point is that both of those formulae technically represent exactly the same thing, but they needed to see the structural formula to see that you fully understood where the functional group went! (The question was reflux of a primary alcohol)


ohh sorry yea I see what you mean, i've done that before too. but I dont' see why c3h7cooh is any different to writing the whole thing out, because it still shows exactly where your functional groups present. but yea best just to write the whole structure out :smile:
Original post by needtosucceed=)
theres no 3iv on the paper?


3 A iv I asked the same question too :tongue:

Thanks genius in advance
Reply 1398
Avatar for Cerelaaa
Cerelaaa
Original post by Jacksgap
Alkene can form co2 + H2o???? :confused:


Complete combusion...

so CH4 + 2O2 -> CO2 + 2H2O.
Original post by Cerelaaa
Complete combusion...

so CH4 + 2O2 -> CO2 + 2H2O.


You said Alkene.. if i am not mistaken.. :smile:

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