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Answer in General Chemistry for Teeeeeerrrrraara #166127

Author:
April 9th, 2023

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

……………..g

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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