In the reaction,
PET is the limiting reactant
starting with 1 g of PET
moles of PET = 1 g/192 g/mol
                     Â
= 0.00521 mol
Theoretical yield of terephthalic acid = 0.00521 x 166.13
                                                         Â
= 0.865 g
Percent yield of reaction = 0.76 x 100/0.865
                                      Â
= 87.863%