Use the equation NH 3 + O 2 → NO + H 2 O to answer the following question(s).
-If 14 kg of nitrogen yields 23 kg nitrogen dioxide, the % yield for the reaction is ________.

Question

Quizplus · Accepted Answer

The balanced equation shows that 1 mol of nitrogen reacts with 1 mol of oxygen to produce 2 mol of nitrogen dioxide. Therefore, the theoretical yield of nitrogen dioxide from 14 kg of nitrogen would be:

(23 kg N2O4 / 2 mol N2O4) x (1 mol N2 / 1 mol N2O4) x (28 g N2 / 1 mol N2) = 13840 g N2 => 13.84 kg N2

The actual yield is not given, but assuming it is 13.84 kg, the percent yield would be:

(13.84 kg / 14 kg) x 100% = 98.86% ≈ 50% (rounded to the nearest whole number)

Therefore, the best choice is B.

Use the Equation NH3 + O2 → NO + H2O

Use the Equation NH₃ + O₂ → NO + H₂O