naming ketones
if you have propanone, in answer to a question would you say propanone or propan-2-one, despite it being the only positional isomer
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
Original post by Toasticide
if you have propanone, in answer to a question would you say propanone or propan-2-one, despite it being the only positional isomer
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
Don't we all love chemistry?
No you don't put a 2 in because there's no other place the =O can go, it must be stuck on a carbon which has 2 carbons on either side of it. The only place for this is in the middle, if the =O went on either end of the molecule it'd be an aldehyde right?
oh i know itd be an aldehyde if it was at the end, it's just sometimes mark schemes can be overly specific and i didnt know if you'd have to say carbon 2 since for all the examiners know, you may not even know what the prop- prefix means!
I hope you get what you mean but thanks for the answer
I hope you get what you mean but thanks for the answer
Original post by Toasticide
oh i know itd be an aldehyde if it was at the end, it's just sometimes mark schemes can be overly specific and i didnt know if you'd have to say carbon 2 since for all the examiners know, you may not even know what the prop- prefix means!
I hope you get what you mean but thanks for the answer
I hope you get what you mean but thanks for the answer
Remember the IUPAC naming system?
Remember we don't say ethan-1-ol? because no matter how you arrange it it'll always have an OH at the end of the chain
random fact i found out you can't write propan-1-ol as 1-hydroxy propane because the group is supposed to be in the name of the main molecule, other stuff like esters and carboxyilic acids take precedence over the alcohol group and that's when you can put hydroxy as a prefix
Original post by Toasticide
if you have propanone, in answer to a question would you say propanone or propan-2-one, despite it being the only positional isomer
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
(that's still a ketone).
even though i feel the 2 is unnecessary i feel like examiners would like it anyway
As long as you get them right, adding unnecessary numbers will never be marked down. Whereas leaving out important numbers, e.g. pentanone will lose marks.
Quick Reply
Related discussions
- A-Level chemistry
- CHEM A-level HEL|P
- carbonyls a level chemistry
- propan-1-ol and propanal
- is but-1-ene the same as butene
- What type of isomerism do Ketones and Functional groups have?
- why reflux? (alcohol to ketone)
- A-Level chemistry
- Spectroscopy help
- Edexcel A-Level Chem Paper 2 Advanced Organic and Physical Chemistry [Exam Chat]
- Electrophillic/nucelophillic substitution /addition
- Functional Groups Revision
- Reaction of Alcohols
- How do you distinguish between primary and secondary alcohols by chemical reaction?
- A level chemistry optical isomerism MC questions
- Connectivity chem
- Chemistry
- what do the empty sticks mean in the chemistry data sheet?
- Does anyone why the answer to this a level chemistry question is A
- Chemistry A level
Latest
Trending
Last reply 6 days ago
Im confused about this chemistry question, why does it form these productsTrending
Last reply 6 days ago
Im confused about this chemistry question, why does it form these products
