o 4/14/2016 08:00 AM 0 30/ 100 Gradebook Print Calculator Periodic Table Questio

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o 4/14/2016 08:00 AM 0 30/ 100 Gradebook Print Calculator Periodic Table Question 6 of 10 Incorrect Map sapling learning In the following reaction, 89.4 g salicylic acid, C7H6O, reacts with excess acetic anhydride, C4H6O3, producing 64.1 g of aspirin, CgH804. Calculate the percent yield of this reaction 46 3 Number 71.7 Previous Give Up & View Solution . Check Answer Next Exit Y Hint Start by calculating the theoretical yield. The theoretical yield is the mass, in grams, of aspirin, CgHgO4, that could form when 89.4 g salicylic acid, C7H603, reacts with excess acetic anhydride, C4H603.

Explanation / Answer

mol of SA= 89.4/138.121 = 0.6472 mol of S.A

mol of A.A = excess

mol of ASP = 64.1/180.157 = 0.35580 mol of ASP

mass of asp /theoretical) = 0.6472 *180.157 = 116.5976104

% ytield = Actual/theoretical * 100 = 64.1/116.5976104 * 100 = 54.97%

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