5g of acetylsalicylic acid (aspirin) was obtained from 2.4g of salicylic acid. Calculate % yield, if the theoretical yield is 3.6g.
Aspirin is prepared by the reaction between acetic anhydride and salicylic acid.
acetic anhydride + salicylic acid → aspirin + acetic acid:
"C_4H_6O_3 +C_7H_7O_3 = C_9H_8O_4 +C_2H_4O_2"
The percent yield is the ration of the actual mass to theoretical yield:
"\\% = \\frac{m}{m_{theor}}\\times100 \\% = \\frac{2.4 g }{3.6 g } \\times 100 = 67\\%"
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