How many moles of ammonia would be required to react exactly with 0.470 moles of copper(II) oxide in the following chemical reaction?
2 NH₃(g) + 3 CuO(s) → 3 Cu(s) + N₂(g) + 3 H₂O(g)
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2 NH₃(g) + 3 CuO(s) → 3 Cu(s) + N₂(g) + 3 H₂O(g) ... balanced equation
The coefficients tell you the mole ratios, so 2 moles ammonia (NH3) will react with 3 moles of copper(II) oxide, (CuO). Set up a simple proportion or use dimensional analysis to answer the question:
proportion: 2 mol NH3/3 mol CuO = x mol NH3/0.470 mol CuO and x = 0.313 moles NH3
dimensional analysis: 0.470 mol CuO x 2 mol NH3/3 mol CuO = 0.313 moles NH3
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