Answer to Question #166127 in General Chemistry for Teeeeeerrrrraara

Question #166127

How many grams of aspirin are produced if 83.4 g of salicylic acid is treated with excess acetic anhydride?


.................g


1
Expert's answer
2021-02-24T03:38:30-0500

Asprin is made by the reaction of salicylic acid and acetic anhydride;


C7H6O3 + C4H6O3 "\\to" C9H8O4 + CH3CO2H


Since acetic anhydride is in excess, salicylic acid is the limiting reagent here


Moles of Salicylic acid "=\\dfrac{mass}{MM} = \\dfrac{83.4g}{138.121g\/mol}=0.6038mol"


Moles of aspirin produced;

From the balanced equation, the mole ratio is 1:1

Hence, moles of aspirin"=\\dfrac{1}{1}x0.60382 mol"


Mass of aspirin;


Mass = moles x MM


= 0.60382 mol x 180.158g/mol


= 108.78g of aspirin is produced

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