Topic: Recrystallization of Aspirin
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Answers to Common Questions
Why use recrystallization for the purification of aspirin?
Filtration alone ----> Aspirin will not be sufficiently pure . Recrystallization & followed by Filtration ----> Purer Aspirin ; Most impurities stay in solvent ; Minimum amount of solvent adhere to filtered Aspirin ( can be easily dried ) .... Read More »
Source: http://answers.yahoo.com/question/index?qid=20080916222342AA00d71
Why Is Recrystallization Of Aspirin Important?
It purifies the aspirin. Anonymous Read More »
Source: http://www.blurtit.com/q8520819.html
What is reaction to show why aspirin cannot be recrystallized in ...
The pKa of aspirin is ca. 3.5, meaning that it will form an acidic solution in water. Since esters are hydrolyzed in hot water under acidic conditions, any attempt to recrystallize aspirin will likely cause considerable (if not complete) hy... Read More »
Source: http://answers.yahoo.com/question/index?qid=20090209055612AAkRL2E
More Common Questions
Answers to Other Common Questions
One problem with aspirin is that it is not particularly soluble in cold, or even warm water (e.g. 36°C – the temperature of the human body). Aspirin’s fairly high solubility in hot water, but relative insolubility in cold water, is the main...
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Source: http://ww.chemistry-react.org/go/textonly/Faq/Faq_23350.html
