in aspirin synthesis, why does sulphuric acid give alower yield than H3PO4

Subject: in aspirin synthesis, why does sulphuric acid give alower yield than H3PO4

Date: Sat Apr 8 07:49:28 2006
Posted by No name entered.
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Chemistry
ID: 1144507768.Ch

Message:


i am carrying out an experiment where i have to synthesise aspirin but i have 
been told that a concentrated sulphuric acid catalyst will give  alower yield 
or aspirin than a phosphoric acid catalyst, despite the sulphuric acid being a 
stronger acid.  I wanted to know why this happens.
thank you

Re: in aspirin synthesis, why does sulphuric acid give alower yield than H3PO4

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