Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
The mass of salicylic acid is 2.001g. The volume of acetic anhydride is 5mL. The Mass of dry Aspirin is .887g.?
Determine the limiting reagent in the aspirin synthesis. (Density of acetic anhydride is 1.6908 g*mL^(-1)) What is the theoretical yield of aspirin? What is the percent yield of aspirin?
1 Answer
- ?Lv 54 years agoFavorite Answer
C7H6O3 + ( CH3CO)2 O -------> C9H8O4 + CH3COOH
** Moles of salicylic acid : 2.001 g x ( 1 mol / 138 g ) = 0.0145 mol
** Moles of acetic anhydride : 2ml x (1.6908 g / ml) x ( 1mol /102 g ) = 0.03315 mol
The ratio of salicylic acid to acetic anhydride is 1 : 1 so acid is a limiting reactant.and the moles of aspirin produces : 0.0145 mol
** The theoretical amount of aspirin : 0.0145 mol x( 180 g / 1 mol ) = 2.61 g
** The percent yield of aspirin : ( 0.887 g / 2.61 g) x 100 = 33.4 %