Answer to Question #330943 in Chemistry for ali

Question

Ammonia (NH3) combines with oxygen to give nitrogen monoxide and water. What amount (moles) of oxygen is required to use up 2.75 moles of ammonia?

Answer 1

ammonia = NH₃

oxygen = O₂

nitrogen monoxide = NO

water = H₂O

Solution:

Balanced chemical equation:

4NH₃ + 5O₂ → 4NO + 6H₂O

According to stoichiometry:

4 mol of NH₃ react with 5 mol of O₂

Thus, 2.75 mol of NH₃ react with:

(2.75 mol NH₃) × (5 mol O₂ / 4 mol NH₃) = 3.4375 mol O₂ = 3.44 mol O₂

Answer: 3.44 moles of oxygen (O₂) is required