Acetylsalicylic acid

Question

If you want to obtain 100 kg of acetylsalicylic acid, how many grams of salicylic acid do you need?

Answer 1

Salicylic acid + Acetic anhydride → Acetylsalicylic acid + Acetic acid

Please note my abbreviations: Acetylsalicylic acid = ASA, and salicylic acid = SA

100 kg ASA x (1000 g / 1 kg) = 100,000 g ASA

100,000 g ASA x (1 mol ASA / 180.16 g ASA) x (1 mol SA / 1 mol ASA) x (138.12 g SA / 1 mol SA) = 76,665 g SA ≅ 80,000 g SA (rounded to 1 significant figure)