1. A chemist is commissioned to produce twenty pallets of aspirin: C7H6O3 (salic
ID: 915341 • Letter: 1
Question
1. A chemist is commissioned to produce twenty pallets of aspirin: C7H6O3 (salicylic acid) + C4H6O3 (acetic anhydride) ? C9H8O4 (aspirin) +C2H4O2 (acetic acid) How many kilograms of salicylic acid are required if the aspirin is produced with a 78.2% yield? How many liters of acetic anhydride are required? What is the total cost of the reactants used? A chemist is commissioned to produce twenty pallet The box depicted to the left contains a bottle. The bottle contains 500 tablets (each containing 325 mg of aspirin). A case contains 144 bottles. A pallet contains 150 cases A chemist is commissioned to produce twenty pallet The figure to the left depicts a pallet of cases. A chemist is commissioned to produce twenty pallet A 55 gallon drum of acetic anhydride (density = 1.08 g/mL) costs the chemist $2640.00 A chemist is commissioned to produce twenty pallet 50 pound bag of salicylic acid costs the chemist $508.00
Explanation / Answer
Given
C7H6O3 (salicylic acid) + C4H6O3 (acetic anhydride) gives you C9H8O4 (aspirin) +C2H4O2 (acetic acid)
Molecular weight of salicylic acid is 138.121
Molecular weight of aspirin is 180.157
Aspirine bottle contains 500 tablets of weight 325mg= 162.5g of Aspirine each bottle
Each Case has 144 bottles hence 144 x 162.5g = 23500 g of Aspirin
A pallet contains 150 cases hence 150 x 23500g = 3510 kg
Target is to produce 20 pallets hence 20 x 3510 kg= 70200 kg of Aspirine
Calculations
138.121 g of salicylic acid gives you 180.157g aspirin if the yield id 100 %
if we calculate for 78.2% it comes to 140.88 g
Hence to produce 140.88 g of Aspirine we require 138.121 g of salicylic acid.
70200 kg of Aspirine requires= 68825 kg of salicylic acid.
if Acetic anhydride(mol wt=102.09, d =1.08g/ml) used one equivalat in the reaction then 47072 lit of acetic anhydride will require. hence 12435 gallons of acetic acid. hence for we will require 855 drums of acetic acid of cost
Total cost of acetic acid is $2640 x 855 =$2257200
Total cost of Salicylic acid is (68825 kg=151733 pounds)
bags require 3034 bags of salicylic acid of cost $508 x 3034=$1541607
Total cost of Salicylic acid is $1541607
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