The percent yield : 88.4%
Further explanation
Reaction
Salicylic acid (C₇H₆O₃) reacts with acetic anhydride (C₄H₆O₃) to form acetylsalicylic acid (C₉H₈O₄)
2C₇H₆O₃(aq)+C₄H₆O₃(aq)⇒2C₉H₈O₄(aq) + H₂O(l)
MW C₇H₆O₃ : 138.12 g/mol
mol C₇H₆O₃
[tex]\tt \dfrac{200}{138.12}=1.45[/tex]
MW C₉H₈O₄ : 180.16 g/mol
mol C₇H₆O₃ = mol C₉H₈O₄ (mol ratio from equation 2:2), so mass of C₉H₈O₄
[tex]\tt 1.45\times 180.16=261.232~g[/tex]
percent yield :
[tex]\tt =\dfrac{actual}{theoretical}=\dfrac{231}{261.232}=0.884=88.4\%[/tex]
