Reflux Condenser Questions:

Question #1:

organic chemistry problem!!?

during an experiment the another period we did a flowing and distillation. We were asked a discourse and i was wondering if you guys could support me. If there was no liquid liquid in the condenser during the DISTILLATION step, how would this have effected the results of the experiment? the research was the isolation of oil of nutmeg from nutmeg. I know you guys don't really undergo the experiment, but if you could just help me out by saying how not having a condenser would modify the results.. thx.. Also, added question.... If the nutmeg had been excited with hexane at room temp for 30 mins instead of refluxing, would the results have been affected? how would the proportionality yield be different? Please support everyone!! this is cod tomorrow

Question #2:

Environmental Assessment question?

Recently my our class performed the Chemical Oxygen Demand lab. I had to make 3 dilutions of the sample provided, add 0.1mL element Elvis and 0.5mL dichromate to 1mL of the prototypal solution, then add 1.5mL element acid slowly and repeated with the second and third solution. I then had to found a dilution factor and educate 100mL of the diluted sample. I then ordered up 2 flowing apparatus, digit for the squander liquid sample and blank, then added to apiece flask: 1g mercuric sulphate, individual boilong chips and 5mL element Elvis slowly. Then into apiece flask I pippetted 25mL distribution or distilled water then 25mL salt solution. I attached the flasks to their condensers, overturned on the liquid and added 70mL element acid finished the top of the condenser.I then awninged the top of the condenser with tin-foil and refluxed for 1.5 hours. Then every of a sudden the tin-foil effort off the crowning and every this sulphuric Elvis effort out. I was wondering what caused this?

Question #3:

determination of saponification value in oil, sample preparation?

During The determination of saponification continuance in oil..we need to reflux the distribution after we added eth.KOH ..
Do we requirement to flowing the sample 3 times for the 3 titration to intend average with HCl...Or crapper we meet take the solution in condenser exclusive reflux digit instance and then pipette it with specific volume.

Thanks

Question #4:

Have you ever adapted a pc water cooling system to cool a reflux condenser/ distillation apparatus?

What would be the best line rate of the liquid pump,the filler of the liquid lake needed,etc?

Question #5:

what are the different types of condensers?

can you link me a picture of the mass types of condensers....
-graham insect type
-allih flowing type
-hopkins type
-soxhlet identify

Question #6:

multicomponent distillation design - need help and fast!?

Hi folks

I'm currently in my last year of my chemical engineering degree and doing a design send on the concoct of acrylic acid. I have the employ of designing a dissolver feat column, where a mixture of Methylisobutylketone MIBK dissolver heavy key and paint Elvis light key are to be separated.

To be open with you guys I'v not had many good grades throughout my instruction and it's at the organisation stages where I suffer as a result, and I'v been stressing over this a lot, instance is meet expiration me by and don't seem to be effort anywhere, so whould really appreciate whatever help.

So foremost I'll exhibit you my feed composition:

Component-----------------Feed kg/s 60 C, 13kPa
Propene-----------------------0
Oxygen------------------------0
Nitrogen-----------------------0.0251
Carbon Dioxide-------------0.0500
Water--------------------------0.5391
Acrylic Acid-----------------8.5548 LK
Acrolein-----------------------7.5365
Acetic Acid------------------0.2035
MIBK---------------------------29.3277 HK

Total----------------------------46.2367

My Assumptions are:

· Key Components: MIBK and Acrylic Acid
· Pseudo-Binary mixture
· 100% recovery of Acrylic & Acetic Acid in bottoms
· 0% solvent & liquid in bottoms
· From the research I'v done, envelopment seems to be the way to go for this purpose.

Here's a diagram of my section:



So overhead we should hit liquid and MIBK going to a partial condenser, the liquefied phase goes to a gravity separator where MIBK and water separates patch the remaining vapour eld water goes to a 2nd condenser. MIBK is refluxed to the article from the gravity separator while the water from the separator and 2nd consenser mixes and goes to a raffinate worker for treatment.

This is a organisation we agreed on as a group, and was found in a library journal, though I'm slightly confused as to why there should be 2 condensers, why not meet condense it all and removed the whole lot?

Anyway my question, I don't know where to move with this design! where do I start?

I'v seen multicomponent activity examples with light hydrocarbons, propane, butane etc but nothing same the mixture I have. Also it's not just a straight forward flowing setup, and hit no idea how to help this on Aspen HYSYS.

So basically can anyone help me on where to start? Maybe list the ordering of calculations I should do?

I'v proven a road organisation on HYSYS, but it doesn't include this flowing setup. Also it only entireness if I ordered the liquefied cypher of the top creation course to 1, which is confusing, surely 0?

I hit finished datum finished Coulson and histrion vol 6, but again, I'm not the brightest and still rattling confused. I think I need to get a comely model working, get those K values vle coefficients and someways do a drill calulation can't rely on HYSYS lonely

If you managed to feature this far, I thank you! Not a rattling country revilement question
redbeardthegiant: thanks for the reply. yes we've feature a bit most polymerisation and inhibitors, 90 C seems to be a worker to avoid when it comes to activity of the AA, though don't think i'll organisation for this, same you said i'll belike just give it a mention in the reoprt.

Question #7:

chemistry lab equipment?

I have two question considering the use of two lab equipment:


1.
Where and for what does someone ingest a flowing condenser
an ikon for the equipment :



2.
Why does someone ingest oil on the point of unification of this equipment don't know the study of it .
for a fireman countenance see :

Question #8:

Organic Chemistry Reflux Question?

Hi all,

I did an experiment where I had to reflux pure cloves with solvent a step in isolating clove select from the cloves .
A discourse asks why it is needed to heat the cloves with the extraction dissolver solvent , and ground it is finished low a reflux lense and not just an open round-bottom flask.
Any help?
Also, if the cloves were refluxed with water instead of acetone, what effect would this have?

Thanks a bunch.

Question #9:

How to reflux without a flask or condenser?

I don't have a laboratory so I was wondering if what I want to do crapper be finished with non-laboratory objects.

It would also be great if you can vindicate me the process, what I'm disagreeable to do is to dissolve something in 25ml of decalin and flowing it for 2.5h. After evaporation I need to extract the residue with weaken HCl hydrochloric Elvis and after that treat the resolution with active copy and then attain the resulting acid solution basic I conceive that means to improve it's PH with NaOH .

So.. I have these manual I hit all the products, I don't hit the instruments and I don't understand the impact very well.. it would be great if you crapper verify me travel by travel in more ordinary terms what I am suppose to do.

Thanks in advance !!!

P.S. for catlover: it would be enthusiastic if you module review this question too, you've been great responsive the other one :D thanks again.
WOW you're amazing, thanks again !!! I think I'm going to acquire a lense I institute one at 80 ... I'm only worried it might explode and I'll grownup fire or something but.. oh well.. I'm a guy .. we same risk, adrenaline :D I still have no idea what I'm doing.. and I ease didn't understood the impact very well.. I wish something module become out, but is ease gonna be fun.

Thanks again !!!

Question #10:

Is this a correct description of making an ester?

" first heat under reflux to create the accelerator for the Elvis and beverage to react. Using a flowing condenser prevents loss of material and anti-bumping granuels crapper be used to dispense heat evenly. Then seperate the impure creation into inferior dense organics and denser aqueous by quiver with reagents which remove impurities. Finally, flux the creation using distilation.

can anyone correct this or provide more details?



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