Homework Help: Chemistry

Posted by Juliet on Monday, October 25, 2010 at 2:49pm.

3) A student dissolves a 1.18g aspirin tablet in water and titrates the
solution with a .265M NaOH. 22.05mL of NaOH are required to reach the
equivalence point. Calculate the percentage of acetylsalicylic acid in the tablet.

Chemistry - DrBob222, Monday, October 25, 2010 at 3:51pm
moles NaOH needed = M x L = ??
moles ASA = same as moles NaOH since this is a 1:1 titration. I assume you know the reaction.
grams ASA = moles ASA x molar mass ASA.

%ASA = (grams ASA/mass sample)*100 = ?

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