The Student Room Group

Functional group isomers?

Hey!

I've been given the following equations: C5H10O and C4H8O2

For C5H10O (pentanal) I have:
pentan-2-one and pentan-3-one. Now I'm a little confused as to whether I also include 2-methylbutanal and 3-methylbutanal.

For C4H8O2 (butanoic acid) I'm really confused as to what I can do. Can I move the =O and the OH separately? Because surely there's quite a few possibilites there.

Thanks!

Just realised that this is in the Science forum rather than Chem sub-forum. Sorry mods :smile: Move if necessary :smile:

Reply 1

Couldxbe

Hey!

I've been given the following equations: C5H10O and C4H8O2

For C5H10O (pentanal) I have:
pentan-2-one and pentan-3-one. Now I'm a little confused as to whether I also include 2-methylbutanal and 3-methylbutanal.


Yes, 2-methylbutanal and 3-methylbutanal should be included.

Couldxbe

For C4H8O2 (butanoic acid) I'm really confused as to what I can do. Can I move the =O and the OH separately? Because surely there's quite a few possibilites there.


No, you shouldn't move the =OH and the -OH separately. -COOH should be united since it's the function group for this acid.

Hope this helps :smile: