Question

I need help filling this separation scheme out. I don't quite understand the extraction flowchart. Any help would be appreciated. @photon336

Answer 1

it's been a while i'll get to it when I can

Answer 2

The first part of this seems a little odd. h2so4 is a strong acid and would cause an acidic cleavage of an ether.

Answer 3

sorry that's an ester in the first compound reactant that i drew

Answer 4

does this help?

Answer 5

@Summersnow8 anything with a charge on it goes into the aqueous layer

Answer 6

can you circle what i put in which box? I am not sure how this flow chart works.... I have never seen one before

Answer 7

like, what do I put in the organic and aqueous after adding H2O?

Answer 8

hold on I can't do the whole thing for you but I can help with some of them until you get the pattern of how it goes

Answer 9

let me try to circle it

Answer 10

oh okay..... so there is a pattern

Answer 11

yep and that's what i'm going to try to help you with

Answer 12

ok

Answer 13

was there anymore to this page?

Answer 14

I'm sorry, I'm not good with organic chemistry

Answer 15

This is as far as I could get...... @Photon336

Answer 16

This chart is an idealized guideline for what you will obtain at each step where you have the separation of the compounds present between two phases, the aqueous and the organic layers. The separation will not be 100% unless you use other more sophisticated chromatography techniques, so impurities will be carried forth at each step (because their partition coefficients will not allow 100% distribution into a single phase) but you can ignore this in the chart. Give me a minute and I will fill the chart.

Answer 17

okay, thank you!

Answer 18

oh, so I don't have to draw the structures? Just write in the letters?

Answer 19

well you should draw the structures, i just wrote the letters because it would take me too long to draw them on the computer.

Answer 20

I don't know how some look like though

Answer 21

there isn't anything you haven't already seen, or that hasn't been drawn at the top of the page itself.

Answer 22

alright, thanks

Answer 23

no problem

Answer 24

last question, why do you have the desired product in the upper boxes? shouldn't it just be in the 3rd?

Answer 25

nope, it didn't magically appear at the third step it was present the whole time, this is a separation scheme, right?

we're "selectively" separating the compounds by chemically modifying them and using these to change their solubilities in the two phases.

Answer 26

gotcha, okay, my bad. Thanks again for your help

Answer 27

no problem! don't hesitate to ask again if you have more doubts

Answer 28

@aaronq , I have a question that kind of has to do with the flowchart you helped me with

Answer 29

ask away

Answer 30

Okay so in my experiment we were given an unknown mixture that contained carboxylic acid, an amine, and a neutral compound. I used a separatory funnel, I added NaOH to have carboxylic acid pronate into the aqueous layer in order to isolate it, then added HCl to isolate it..... for the amine, I added HCl to depronate it, then NaOH to isolate it... and then for the neutral I added a drying agent and used a rotovac to isolate the neutral...... my question is "how would I know which compound was which functional group" @aaronq

Answer 31

you would know based on the reactivity, write equations for each one of the processes you did. you'll see that you selectively extracted the acid first, etc.

Answer 32

alright