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

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Chemistry

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

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4.0 Ratings (651 Votes)

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

138.12 gÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 180.16 g

Â Â 96 g Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

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

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

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

actual yield = 10.7 g

% yield = (actual / theoritical ) x 100 Â Â Â

= (10.7 / 125.22 ) x 100 Â Â Â Â Â

Â Â = 8.54 %

percent yield of the reaction = 8.54 %

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

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