A student reacts 96g of salicylic acid with 10 mL of acetic anhydride producing 10.7g of...

A student reacts 96g of salicylic acid with 10 mL of acetic anhydride producing 10.7g of acetyl salicylic acid. What is the percent yield of the reaction?

Expert Solution

salicylic acid molar mass = 138 .12 g/mol

acetic anhydride molar mass = 102 .09 g/mol

acetyl salicylic acid molar mass = 180.16 g/mol

salicylic acid + acetic anhydride --------------------> acetyl salicylic acid + H2O

138.12 g 180.16 g

96 g

138.12 g of salicylic acid ---------------------- 180.16 g of acetyl salicylic acid

96 g of salicylic acid ---------------------- ?? acetyl salicylic acid

acetyl salicylic acid = 125.22 g --------------- theoritical yield

actual yield = 10.7 g

% yield = (actual / theoritical ) x 100

= (10.7 / 125.22 ) x 100

= 8.54 %

percent yield of the reaction = 8.54 %

queen_honey_blossom answered 1 year ago

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