Asked by Sean
how do i calculate theoretical yield?
Answers
Answered by
DrBob222
Theoretical yield is the amount calculated from the stoichiometry of the reaction. For example, suppose we wanted to calculate the theoretical yield of CO2 from the reaction
C + O2 ==> CO2 if we had 24 g carbon initially.
24 g C = 24/12 = 2 mols C.
2 mols C produces 2 mol CO2 (from the equation).
2 mol CO2 is 2 mols x 44 grams/mol = 88 grams. 88 grams is the theoretical yield (that is, 100%).
If the problem also stated that we performed the experiment and we collected 80 g CO2, we would calculate the percent yield as
(actual yield)/theoretical yield)*100 =
(80/88)*100 = xx percent yield.
C + O2 ==> CO2 if we had 24 g carbon initially.
24 g C = 24/12 = 2 mols C.
2 mols C produces 2 mol CO2 (from the equation).
2 mol CO2 is 2 mols x 44 grams/mol = 88 grams. 88 grams is the theoretical yield (that is, 100%).
If the problem also stated that we performed the experiment and we collected 80 g CO2, we would calculate the percent yield as
(actual yield)/theoretical yield)*100 =
(80/88)*100 = xx percent yield.
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