distinguishing tests (1 Viewer)

[sneaker]

Does anyone know the tests that distinguish between the following alcohols: 1-butanol, 2-butanol, and 2-methylpropan-2-ol?
Thanks

 

[BlackJack]

I have no idea...

can you do a boiling point test?

Or do you make the ester and smell it?

(spectroscopy?)

never had to do that last year... isomer distinguishment via actual pracs...

 

[iambored]

do we seriously need to know that?

 

[Toodulu]

by adding something (can't remember.. it was something orange) and oxidising them...

i think u distinguish the tertiary alkanol coz it doesn't oxidise.
um, and u distinguish the primary and secondary by adding the thingy drop by drop, and one of them decolourises before the other.

sorry, i'm absolutely no help... dont have my chem stuff with me

 

[spice girl]

you might want to search this up on google or somethin, but i remember you can either use ceric ammonium nitrate (the orange stuff), or lucas reagent (Zn2+ in HCl)

I think lucas reagent gives +ve result to tertiary alcohols and also secondary results after heating.

I've forgotten bout ceric ammonium nitrate...

edit: oh and you don't need it for the hsc, unless it's an elective)

 

[elizabethy]

Originally posted by spice girl
you might want to search this up on google or somethin, but i remember you can either use ceric ammonium nitrate (the orange stuff), or lucas reagent (Zn2+ in HCl)

I think lucas reagent gives +ve result to tertiary alcohols and also secondary results after heating.

I've forgotten bout ceric ammonium nitrate...

edit: oh and you don't need it for the hsc, unless it's an elective)

which option will we need it for?

 

[Toodulu]

we're doing it for forensics

 

[sneaker]

thanks all
yeah it's for forensics, so just to clarify, we need to know the tests for distinguishing between the primary, secondary, and tertiary alcohols?

thanks again

 

[Toodulu]

u won't get asked about tertiary i think. but u will need to know the distinguishing tests for the others