What mass of ammonia is consumed by the reaction of 8.45g of oxygen gas?
2016-11-09 4:47 pm
Ammonia NH3 chemically reacts with oxygen gas O2 to produce nitric oxide NO and water H2O. What mass of ammonia is consumed by the reaction of 8.45g of oxygen gas?
回答 (2)
2016-11-09 5:02 pm
Molar mass of NH₃ = (14.0 + 1.0×3) g/mol = 17.0 g/mol
Molar mass of O₂ = 16×2 g/mol = 32 g/mol
4NH₃ + 5O₂ → 4NO + 6H₂O
OR: Mole ratio NH₃ : O₂ = 4 : 5
No. of moles of O₂ = (8.45 g) / (32.0 g/mol) = 0.264 mol
No. of moles of NH₃ consumed = (0.264 mol) × (4/5) = 0.211 mol
Mass of NH₃ consumed = (0.211 mol) × (17.0 g) = 3.59 g
Molar mass of O₂ = 16×2 g/mol = 32 g/mol
4NH₃ + 5O₂ → 4NO + 6H₂O
OR: Mole ratio NH₃ : O₂ = 4 : 5
No. of moles of O₂ = (8.45 g) / (32.0 g/mol) = 0.264 mol
No. of moles of NH₃ consumed = (0.264 mol) × (4/5) = 0.211 mol
Mass of NH₃ consumed = (0.211 mol) × (17.0 g) = 3.59 g
2016-11-09 5:15 pm
Write a balanced equation:
4 NH3 + 5 O2 --> 4 NO + 6 H2O
8.45 g O2 / 32 g/mol X (4 mol NH3 / 5 mol O2) X 17.0 g/mol NH3 = 3.59 g NH3
4 NH3 + 5 O2 --> 4 NO + 6 H2O
8.45 g O2 / 32 g/mol X (4 mol NH3 / 5 mol O2) X 17.0 g/mol NH3 = 3.59 g NH3
收錄日期: 2021-05-01 13:06:50
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