Anonymous asked in Science & MathematicsChemistry · 10 years ago

aspirin, C9H8O4, can be made from the reaction of salicylic acid, C7H6O3, and acetic anhydride, C4H6O3.?

An additional product of the reaction is acetic acid, C2H4O2. what is the minimum amount of salicylic acid necessary to produce 100 tablets which each contain 325 mg of aspirin?

1 Answer

  • a2gal
    Lv 7
    10 years ago
    Favorite Answer

    the balanced equation for the reaction is:

    C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O2

    we want to get 100 tablets of 325 mg aspirin:

    100 tablets * 352 mg/tablet = 32500 mg OR 32.5 g

    convert g to mol using molar mass of aspirin (180 g/mol):

    32.5 g * mol/180 g = 0.181 mol

    from the balanced equation, we know that aspirin and salicylic acid are in a 1:1 mole ratio (both have a coefficient of 1). so 0.181 moles of aspirin are produced from 0.181 moles of salicylic acid.

    convert mol to g using molar mass of salicylic acid (138 g/mol):

    0.181 mol * 138 g/mol = 24.92 g

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