Questions tagged [distillation]
For questions about the process of distillation. For the distillation process used in metal refining, also use the [metallurgy] tag.
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Does distilled water still have ions in it? Does deionized water lack ions, but still have other "stuff" in it?
This isn't a question about the difference between Deionized and Distilled water, my hope is that for once it's actually a chemistry question related to this topic.
Distilled water is created by ...
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Why does the ethanol-water mixture not burn during fractional distillation?
Ethanol-water solution has a flash point lower than ethanol's boiling point in almost all cases. So how is the fractional distillation of the solution possible? Why doesn't the solution ignite? Is it ...
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Can ethanol and heat during distillation cause degradation/dissolution of vinyl tubing leading hot vapors of the distillate to the condenser?
I'm a chemist and a qa lab, and we occasionally test herbal remedy products from one of our customers for alcohol content using a distillation, then using the specific gravity of the distillate to ...
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Alcohol (ethanol) distillation: mystery congener
I regularly home-distil small amounts of potable alcohol (ethanol), mainly from fermented sugar(s) solutions (the 'wash').
My still is a box standard, $4.5\mathrm{L}$ electrically heated (safety!), ...
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Can the enrichment of Uranium be done via manipulating the boiling/melting point difference between differing isotopes of the same element?
I have a Physics question for which I could not find the answer on the Internet, so I would like to see if y'all know the answer to it.
I have found that heavy water will have a different boiling ...
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Doubt regarding steam distillation
According to my textbook, in steam distillation the liquid boils when the sum of vapor pressure due to the organic liquid and that due to water becomes equal to the atmospheric pressure. Why? I did ...
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Why should the conical flask (apparatus on the right) used in Fractional Distillation be left open (without a bung)? [closed]
With context to the image shown, is there a reason as to why the conical flask shouldn't be closed with a bung and is there a way to describe this error?
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Steam distillation vs fractional distillation
I am a high school student and I am a little confused in the techniques used to purify organic compounds. For example, in steam distillation we reduce the external pressure on the compound to be ...
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Is there such a thing as a temperature-controlled reflux column?
You know the deal - you're doing a distillation in the lab, but want a fraction that comes over at a very specific temperature. I find it very hard to control the temperature in my air-cooled reflux ...
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Is it possible to vacuum distill citric acid?
I'm wondering if
it is at all possible to vacuum distill citric acid without the slightest decomposition;
it is something that can easily be done in a small lab with widely available equipment.
I've ...
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How concentrated does sulfuric acid need to be for nitric acid synthesis (H2SO4 + nitrate salt distillation)?
So I have a home lab setup and recently found myself in need of some nitric acid. I could just buy some, but I thought it would be a useful exercise to make my own. I have plenty of nitrate salts ...
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Are all gases equal in their ability to carry with them lower volatility matter at a given temperature? [closed]
As we all know water is a great solvent in it's liquid form relative to other substances. I wonder however how it performs as a gas relative to other stuff.
Does anyone know how well steam carries ...
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Why is the temperature graph sigmoidal in simple distillation of components with very different bps?
I'm writing an organic chemistry lab report on distillation and I thought I understood this, but the more I look at my lab textbook, I realize I don't. My textbook 1 explains that the temperature of ...
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Strange Distillation Behavior
I was attempting a fractional distillation with 1mL water and 1mL propylene glycol, and I’ve been encountering strange behavior with the heating of the mixture. The heating curve shows strange “spikes”...
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Driving force in distillation
If the pressure is lowered in a distillation column, then the equilibrium curve will move further away from the diagonal (bulge out more) in an equilibrium diagram. This leads to a decrease in ideal ...
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