How many grams of aspirin can be produced by the reaction of 28.50 g of saliciyl

Question

How many grams of aspirin can be produced by the reaction of 28.50 g of saliciylic acid in the presence of 16.0 mL of acetyl chloride?  (density of acetyl chloride 1.104 g/mL)

The aspirin produced is washed with cold water and recrystallized from ethyl acetate; the purified aspirin is obtained with a 75% recovery.  How many grams of aspirin are obtained?

How many grams of aspirin can be produced by the reaction of 28.50 g of saliciylic acid in the presence of 16.0 mL of acetyl chloride? (density of acetyl chloride 1.104 g/mL) The aspirin produced is washed with cold water and recrystallized from ethyl acetate; the purified aspirin is obtained with a 75% recovery. How many grams of aspirin are obtained?

Explanation / Answer

saliciylic acid molar mass 138.12gm/mole

28.5 gm=0.206mole

acetyl chloride molar mass =78.49g/mole

16mL=17.664gm=0.225mole

1mole saliciylic acid ==> 1mole acetyl chloride==>1mole aspirin

0.206mole saliciylic acid ==> 0.206mole acetyl chloride==>0.206mole aspirin=0.206*180.157=37.11gm

but yield=75%===27.834gm(ans)

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