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Calculate the theoretical yield of aspirin to be obtained in experiment, 2.0 grams of salicylic acid and 5.0 mL of acetic anhydride (density =...

Calculate the theoretical yield of aspirin to be obtained in experiment, 2.0 grams of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08g/mL).

Molecular mass salicylic acid = 138.118 g/mol
Molecular mass acetic anhydride = 102.09 g/mol

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I got

0.05289 moles of acetic anhydride
0.01448 moles of salicylic acid

Balanced equation:
C7H6O3 + C4H6O3 <---> C9H8O4 + C2H4O2

mole ratio is one to one
Limiting reaction is salicylic acid since it has less moles

So for one mole of salicylic acid used one mole of aspirin is used too. So there are 0.01448 moles of aspirin?

Molecular mass of aspirin = 180.157 g/mol

(180.157 g/mol) (0.01448 mol) = 2.608g of aspirin

Is this correct? Thank You.
2.608g is the theoretical yield of aspirin

CALCUTION OF WT. OF ASPRIN BY TEACHER MW OF ASPIN C9H804 Molecular mass salicylic acid = 138.118 g/mol MW ACETIC ANHY C4H60 3... View the full answer

This question was asked on Nov 14, 2010 and answered on Nov 18, 2010.

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