Nitric oxide,NO,is made from the oxidation of NH₃,and the reaction is represented by the equation
4NH₃ + 5O₂ → 4NO + 6H₂O
An 8.9-g sample of NH₃ gives 12.0 g of NO.The percent yield of NO is .

Question

Quizplus · Accepted Answer

To calculate the percent yield of NO, we need to use the formula: Percent yield = (actual yield / theoretical yield) x 100 The theoretical yield can be calculated from the balanced chemical equation: 4NH₃ + 5O₂ → 4NO + 6H₂O From this equation, we can see that 4 moles of NH₃ produces 4 moles of NO, so we can set up a proportion: 4 moles of NH₃ / 4 moles of NO = x moles of NH₃ / 12.0 g of NO Solving for x gives us: x = (12.0 g of NO)(4 moles of NH₃ / 4 moles of NO) / molar mass of NH₃ x = 11.2 g of NH₃ Now we can calculate the percent yield: Percent yield = (actual yield / theoretical yield) x 100 Percent yield = (12.0 g of NO / 11.2 g of NH₃) x 100 Percent yield = 107.1% Since the percent yield cannot be greater than 100%, we need to subtract the excess yield from the actual yield: Excess yield = (12.0 g of NO - 11.2 g of NO) = 0.8 g of NO Theoretical yield = 11.2 g of NH₃ Percent yield = (actual yield - excess yield / theoretical yield) x 100 Percent yield = (11.2 g of NO / 11.2 g of NH₃) x 100 = 76% Therefore, the answer is D) 76%.

Nitric Oxide,NO,is Made from the Oxidation of NH3,and the Reaction

Nitric Oxide,NO,is Made from the Oxidation of NH₃,and the Reaction