Percentage yield of benzoic acid after recrystallization Theoretical yield 104 03 074 Percentage yield actual yield theoritical yield x 100 041 074 x 100 5540 Melting point of benzoic acid after recrystallization 120 C Discussion. November 16 2016. A percent yield of 90 means the reaction was 90 efficient and 10 of the materials were wasted they failed to react or their products were not captured.
To express the efficiency of a reaction you can calculate the percent yield using this formula.
A sample of benzoic acid was given and undergo a recrystallization process to remove its impurities. Crude percent yield 322 g 296 g 100 109 Percent recovery from recrystallization 243 g 288 g 100 84 Percent yield 109084100 92 this is the same answer obtained above g P mole P MW of P. Then your percent recovery is 70 710 x 100. Calculate The Percentage Yield For Your Crude And Recrystallized Product.