[humbargal]

I am doing a pretty common lab involving the synthesis of aspirin.

You can find the procedure at:
http://www.renegadechemistry.com/AP%20Chemistry%20-%20Lab%2021.pdf

I don't understand how, using Beer's Law and my data, to calculate the purity of my synthesized aspirin sample. I need to calculate the moles of salicylic acid in the aspirin sample, the mass of aspirin in the sample, and the percent of aspirin in the sample. I don't know even know where to start. Can someone explain?

All i know is the Beer-Lamber Law: A=ebc. I don't know if this is useful in solving this.

[Arkcon]

Instead of A=epsilon*b*c, express Beer's Law with words for each symbol and see if you can find out how to use it.

[ARGOS++]

Dear Humbargal;

For how to use The Beer-Lambert Law and how to calculate, you may visit:  "Beer-Lambert Law”
(There is also a lot other Spectroscopy Information there. Also FAQs)

But also “every” University of Chemistry or Physics own at least one Internet page about!

[Edited]
Addendum:
Please correct your “Procedure” at the Statement  14c:
   “If it does not, repeat Step 20d with a more”          ---> 
   “If it does not, repeat Step 13e (and the whole Step  14) with a more”   
(I hope you know how you have to proceed this if it should be required.)


Good Luck!
                    ARGOS⁺⁺

[ARGOS++]

Dear Visitor;

Maybe you, as I, have realised, that the given Link in the original Question is not longer valid.

Because I archived a copy of that paper, I can give you access to it, for all of you who would like to use the method as guidance for identical experiments:

" Aspirin Synt & Beer-Lambert.pdf ”

Good Luck!
                    ARGOS⁺⁺