`C_(7)H_(6)O_(3) + C_(4)H_(6)O_(3) rightarrow C_(9)H_(8)O_(4)O_(2)`
What is the percent yield if 0.85g of aspirin is formed in the reaction of 1.00g of salicylic acid with excess acetic anydride ?
`{:("Substance", "Molar Mass"), (C_(7)H_(6)O_(3), 138.12g.mol^(-1)), (C_(4)H_(6)O_(3), 102.09g.mol^(-1)), (C_(9)H_(8)O_(4), 180.15g. mol^(-1)), (C_(2)H_(4)O_(2), 60.05g.mol^(-1)):}`

Options

A. 0.65
B. 0.77
C. 0.85
D. 0.91

Answer

A

Explanation

Mass of aspirin (theoretical) formed from 1g salicylic acid=`(180.15)/(138.12)=13.04g`
`"% yield"=("Actual amount of product")/("Theoretical amount of product")xx100`
`=(0.85)/(1.304)xx100=65%`