If I have 6.0004 g salicylic acid and 8mL acetic anhydride, what is the theoretical yield of Aspirin (in grams)?
I calculated assuming an excess of AA and got 7.8266g Asp.
But is AA the limiting reactant? And if it is, then what is the actual theoretical yield? Oh I also figured the balanced equation to be:
C7H6O3 + C4H6O3 = C9H8O4 + HC2H3O2
sal. acid MW is 138g/mol
aspring MW is 180g/mol
thanks everybody! :D
2006-11-27 17:55:44 · 2 answers · asked by thesekeys 3 in Science & Mathematics ➔ Chemistry
AA is not the limiting reagent, there is an excess amount of it. AA (from Aldrich catalog) has a density of 1.08g/ml, then 8ml contains .085 mol (1.08g/ml*8ml/102.09g/mol).
6.0004g of Sal. acid is .043mol then you are correct that sal. acid is limiting, giving a theoretical maximum yield of 7.8266g. (if AA is limiting thoeretical max would be 15.2336g)
2006-11-28 01:12:29 · answer #1 · answered by Peter B 3 · 1⤊ 0⤋
Those all sound about right and you probably have all that you need right in fron of you just look at it in a different way.
2006-11-28 02:12:13 · answer #2 · answered by KT 2 · 0⤊ 1⤋