In the reaction 2A + B $\rightarrow$ 3C + D
3)0 mol A and 2.0 mol B react to form 4.0 mol C. What is the percent yield of this reaction?

Question

Quizplus · Accepted Answer

Based on the stoichiometry of the reaction, 2 mol of B should react with 2/3 mol of A to produce 4/3 mol of C. However, since there is no A present, only the amount of C that can be produced from the 2 mol of B is 4.0 mol. Therefore, the actual yield is 4.0 mol and the theoretical yield is 4/3 mol. The percent yield is calculated by (actual yield/theoretical yield) x 100%, which gives (4.0 mol / (4/3) mol) x 100% = 89%. Therefore, the best choice is B.

In the Reaction 2A + B →\rightarrow→ 3C + D 3)0 Mol a and 2

In the Reaction 2A + B $\rightarrow$ 3C + D
3)0 Mol a and 2