February 21, 2017

Homework Help: chemistry

Posted by lyne on Friday, January 23, 2009 at 7:52pm.

Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The balanced equation is given below.
C7H6O3 + C4H6O3 C9H8O4 + HC2H3O2

What mass of acetic anhydride is needed to completely consume 3.60 x 10^2 g salicylic acid?

i worked out the problem and got 270 but the answer is 370. here is my work.

360g C7H6O3 x 1 mol C7H6O3/138.118 g C7H6O3 x 1 mol C4H6O3/ 1 mol C7H6O3 x 102.088 g C4H6O3/1 mol C4H6O3 = 270g C4H6O3

sorry that looks really confusing but is there something wrong with my conversion factor??

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