Question

PLEASE HELP I HAVE NO IDEA WHAT TO DO

Answer 1

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

$\tt \dfrac{200}{138.12}=1.45$

MW C₉H₈O₄ : 180.16 g/mol

mol C₇H₆O₃ = mol C₉H₈O₄ (mol ratio from equation 2:2), so mass of C₉H₈O₄

$\tt 1.45\times 180.16=261.232~g$

percent yield :

$\tt =\dfrac{actual}{theoretical}=\dfrac{231}{261.232}=0.884=88.4\%$