Question

the synthesis of aspirin is a common esterification reaction. it is based on the balanced reaction given in the background of this lab. calculate the theoretical yield of aspirin given that 3.52-ml of acetic anhydride was reacted with 0.9457-g of salicylic acid.

Answer 1

The theoretical yield of aspirin is 1.23 g

Aspirin is a common drug with many uses. It relieves pain and reduces the risk of serious problems such as heart attack and stroke. It comes in many forms, including:

It is important to remember that aspirin alone does not lower blood pressure. However, its ability to thin the blood may benefit some people with high blood pressure.

moles of salicylic acid = mass / molar mass

=> 0.9457 / 138.2 = 0.006843 mol

Acetic anhydride is in excess. Thus salicylic acid is the limiting reactant.

Total moles of aspirin that can form = moles of salicylic acid = 0.006843

mass of aspirin = number of moles of aspirin x molar mass of aspirin

= 0.006843 mol x 180.16g/mol = 1.23g

Thus theoretical yield of aspirin = 1.23 g

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