All Questions
Tagged with extraction purification
13
questions
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Related to liquid-liquid extraction
I was reading about purification of organic compounds and I came across this.
I quote below, a line from the excerpt that caused my confusion.
The organic solvent is later removed by distillation or ...
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How to extract pure potassium carbonate from ash?
In our village, lots of ash is produced which is thrown off. I want to extract pure potassium carbonate from that ash. I am able to extract the potassium compound and a soluble compound by ...
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Purification of Red Phosphorus
The Boring Stuff
I'm well acquainted with various fields of science & engineering, but my foray into the world of chemistry is relatively recent.
I'm in a location (probably most of us are to some ...
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Electrolytic refining of precious metals — why the anode rather than the cathode? [closed]
In electrolytic refining, metals like platinum and gold are deposited as anode mud.
Why aren't they deposited on the cathode since they have higher reduction potential?
user84141
2
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1
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Techniques to extract lipids
I am planning an experiment on how to isolate casein and part of the process involves removing any lipids that may still be in it after filtering the precipitated casein out of the milk. I have read ...
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1
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When using a "dilute hydrochloric acid" solution, how diluted should it be?
Quite often when reading through some instructions or documentation or an outline that I've found online (EG: acid-base extractions), theres a step that involves using a "dilute hydrochloric acid ...
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1
answer
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Zinc Sulfate Purification
In the process for electrolysis for zinc, three things must be done:
Leaching the ZnO
Purifying the ZnSO4 by means of cementation
Performing the electrolysis
However, step 2, as it is presented by ...
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Role of hydrochloric acid and sodium hydroxide in isolation of citric acid from lemon juice
I'm trying to extract citric acid from squeezed lemons.
After studying the subject, I found a lab manual [1, p. 68]:
ISOLATION OF CITRIC ACID
Reagents:
Lemon juice (ca. $\pu{100 mL}$ – 3 lemons)
$\...
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1
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Purification/Extraction of Sodium Permanganate
I read this question and answer, and it seemed like a rather nice way to make sodium permanganate. Using the method with sodium hydroxide, I produced a solution. Once filtered and decanted, it was ...
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2
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Extracting urea from urine
What is a process for the extraction of urea from urine? These are the steps I have come up with:
Add 2-propanol to get rid of any bacteria present. (The 2-propanol likely contained some sodium ...
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1
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How can I isolate glycolic acid from sugarcane juice?
This beginning of a bachelor thesis uses ethylene glycol as a catalyst in the isolation of glycolic acid. I can't find the rest of the article (it ends in the middle of the description) to find out ...
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1
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Is there a way to concentrate the vitamin content of a particular food?
I'm looking for a way to extract vitamins out of common food sources of, well, vitamins.
Let's take, as an example, Vitamin A which is commonly found in carrots. A carrot (weighing around 60g) should ...
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2
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How to extract elemental bismuth from pepto bismol?
I was trying to isolate elemental bismuth from pepto bismol (bismuth subsalicylate) using the process seen here but after I added hydrochloric acid, instead of getting a pink foamy substance, I got a ...
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