Use the following atomic weights and quantities to calculate the overall % yield

Question

Use the following atomic weights and quantities to calculate the overall % yield of dibenzy ketone. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. For problems not involving a one to one stoichiometry it may be easier to calculate the theoretical yield in grams from both reagents to determine which is truly the limiting reagent. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C=12, H=1,Fe=56, O = 16 phenylacetic acid iron dibenzyl ketone formula formula weight grams moles 10.396 3.375 6.582 theoretical yield (g) % yield Answer:

Explanation / Answer

2 moles of phenylacetic acid is heated with Iron to give 1 mole of dibenzyl ketone. Here, Iron acts as catalyst and no contribution in stoichometric relation.

2 C8H8O2 ----------------> C15H14O

Theoretically,

                   2 moles of phenylacetic acid produce 1 mole of dibenzyl ketone

                  2x 136 gms of phenylacetic acid produce 210 gms of dibenzyl ketone

                  10.396 gms of phenylacetic acid produce ? of dibenzyl ketone

                                                                         = (210/ 2x136) x 10.396 = 8.026 gms (theoretical yield)

                 Experimental yield of dibenzyl ketone = 6.582 gms

                  % of yield = (6.582/8.026) x 100 = 82%

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.