Homework Help: Chemestry

Posted by Jocelyn on Thursday, February 2, 2012 at 10:02pm.

Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The balanced equation is given below.
C7H6O3 + C4H6O3 C9H8O4 + HC2H3O2
(a) What mass of acetic anhydride is needed to completely consume 4.20 102 g salicylic acid?
g
(b) What is the maximum mass of aspirin (the theoretical yield) that could be produced in this reaction?

Chemestry - Jocelyn, Thursday, February 2, 2012 at 10:08pm
the equation is C7H6O3+C4H603---->C9H8O4+ HC2H3O2 and both a and be ask to be in grams but i dont get how to do it at all PLEASE HELP
Chemestry - DrBob222, Friday, February 3, 2012 at 1:07am
You can follow the instructions in the attached step by step. This will give you theoretical yield.
http://www.jiskha.com/science/chemistry/stoichiometry.html
Chemestry - Jocelyn, Friday, February 3, 2012 at 11:23pm
ok thanks but i still get stuck doing the theoretical yield can you please show me how to do this?

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