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Topic: diethyl ether  (Read 2748 times)

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Offline migueldario

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diethyl ether
« on: June 13, 2010, 04:14:28 PM »
hi everyone,

I will synthesize diethyl ether from ethanol and I  have a question about how to calculate "yield"

in general terms the procedure is as follows

Ethanol is mixed with sulfuric acid and heated to 140 º C in a simple distillation system

then adding more alcohol will drop by drop

The distillate is put in a fractional distillation system and collected the fractions distilled at 35 º C and 75 ° C

practice procedure indicates that I collect the fraction distilling at 35 ° C and distilled to 75 º C

I think the product is collected at 75 º C must be the alcohol unchanged

I think I must subtract the volume of the collected fraction of the total aggregate volume of alcohol

and from this difference calculate theoretical moless

I think this is because in this case the reaction takes place in a simple distillation system in which part of the distilled alcohol without having a chance to react

%Y = (moles/theoretical moles)x 100

I'm right?

excuse my poor english

Offline a student

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Re: diethyl ether
« Reply #1 on: June 14, 2010, 09:52:46 AM »
I think you're right :D

Offline azumore

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Re: diethyl ether
« Reply #2 on: June 14, 2010, 05:05:47 PM »
%yield = Actual amount
            ----------------         X100=Answer
            Expected amount

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