[semi_sonic18]

Aspirin (acetylsalicylic acid and C9H8O4) can be made by acting salicylic acid (C7H6O3) with acetic anhydride [(CH3CO)2O]:

C7H6O3(s) + (CH3CO)2O(s) -> C9H8O4(s) + CH3COOH(l)

In one reaction, 3.027g of salicylic acid and 6.00mL acetic anhydride react to form 3.261g of aspirin.
(a)which of the limiting reactant (density of acetic anhydride = 1.080 g/mL)?
(b)What is the percent yield of this reaction?
(c)What is the percent atom economy of this reaction?

[Sev]

C7H6O3(s) + (CH3CO)2O(s) -> C9H8O4(s) + CH3COOH(l)

In one reaction, 3.027g of salicylic acid and 6.00mL acetic anhydride react to form 3.261g of aspirin.
(a)which of the limiting reactant (density of acetic anhydride = 1.080 g/mL)?

Work out how many moles of each reactant you have.  Which one is yield limiting?

(b)What is the percent yield of this reaction?

Work out the theoretical yield first.

[Borek]

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