Year 12s: what will be the first way you research your future options? >>

Why is a acid anhydride not classified as an ester

Why is a acid anhydride not classified as an ester

so confused

Because it's an anhydride? The same way a ester/carboxylic acid aren't classified as ketones.

It has an ester FG but the reactivity of anhydrides will be sufficiently different (to esters) that it has it's own group.

(edited 7 years ago)

Reply 2

PensAndPaper

Original post by Poooky

Because it's an anhydride? The same way a ester/carboxylic acid aren't classified as ketones.

It IS an ester, it has an ester FG but the reactivity of anhydrides will be sufficiently different (to esters) that it has it's own group.

haha thank you. For some reason i couldn't get my head round it. But the ester ketone example you gave clicked something in my head haha. Too late for revision thanks :biggrin:

Reply 3

Serine Soul

Because acid anhydrides are formed by removing a water molecule from two carboxylic acids while esters are (usually) formed by removing a water molecule from an alcohol and a carboxylic acid :yes:

Reply 4

PensAndPaper

Original post by Serine Soul

Because acid anhydrides are formed by removing a water molecule from two carboxylic acids while esters are (usually) formed by removing a water molecule from an alcohol and a carboxylic acid :yes:

Thank you

)))

Reply 5

username2455183

Original post by PensAndPaper

haha thank you. For some reason i couldn't get my head round it. But the ester ketone example you gave clicked something in my head haha. Too late for revision thanks :biggrin:

Haha, glad it helped! When is your exam? :smile:

Reply 6

dylan1016