Homework Answers
1 mole of C7H6O3 gives 1 mole of aspirin.
Number of moles = mass/molar mass
Molar mass of C7H6O3 = 138.12 g/mol
Moles of C7H6O3 = 79.8/138.12
= 0.58 moles
Moles of aspirin formed = 0.58 mol
Molar mass of aspirin = 180.16 g/mol
Mass of aspirin formed = 180.16 g/mol × 0.58 mol
= 104.50 g of aspirin.
Percent yield = (actual yield/theoretical yield) × 100
Percent yield = ( 79.8/104.50)×100
= 76.4%
Answer = 76.4 %
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