A reaction requires 2 moles of A for every 1 mole of B. If you have 3 moles of A and 2 moles of B, the limiting reactant is: A B Both Neither Limiting and Excess Reactants
1 mole of zinc reacts with 1 mole of sulfur to form zinc sulfide (Zn + S → ZnS). The mass of product formed is (Zn=65, S=32): 65 g 32 g 97 g 48.5 g Limiting and Excess Reactants
The maximum mass of ammonia (NH₃ = 17 g/mol) produced from the mixture above (100g N₂ and 100g H₂) is approximately: 121 g 1700 g 200 g 60.7 g Limiting and Excess Reactants
In the reaction 2SO₂ + O₂ → 2SO₃, 128g of SO₂ (2 mol) and 16g of O₂ (0.5 mol) are used. The mass of excess SO₂ remaining is: 64 g 32 g 16 g 0 g Limiting and Excess Reactants
If 100g of N₂ (3.57 mol) and 100g of H₂ (50 mol) are mixed (N₂ + 3H₂ → 2NH₃), the limiting reactant is: N₂ H₂ NH₃ Neither Limiting and Excess Reactants
The mass of the excess reactant remaining in the reaction above (38g TiCl₄ and 18g H₂O) is: 7.2 g 10.8 g 18 g 3.6 g Limiting and Excess Reactants
For the reaction TiCl₄ + 2H₂O → TiO₂ + 4HCl, 38g of TiCl₄ (0.2 mol) is reacted with 18g of H₂O (1 mol). The excess reactant is: TiCl₄ H₂O TiO₂ HCl Limiting and Excess Reactants
20g of NaOH (0.5 mol) reacts with 20g of H₂SO₄ (≈0.2 mol) via 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O. The limiting reactant is: NaOH H₂SO₄ Na₂SO₄ H₂O Limiting and Excess Reactants
The maximum number of molecules of H₂O produced in the reaction above (20g NaOH and 20g H₂SO₄) is approximately: 0.2 × NA 0.4 × NA 0.5 × NA 1.0 × NA Limiting and Excess Reactants
What mass of water is produced in the above reaction (60g C₂H₆ and 160g O₂)? (H₂O = 18 g/mol) 54 g 77.1 g 68.6 g 108 g Limiting and Excess Reactants
In the reaction 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O, 60g of C₂H₆ (2 mol) reacts with 160g of O₂ (5 mol). The limiting reactant is: C₂H₆ O₂ CO₂ H₂O Limiting and Excess Reactants
From the reaction above (3 mol Mg and 3 mol N₂), the moles of excess reactant (N₂) left are: 1 mole 2 moles 3 moles 0 moles Limiting and Excess Reactants
When 3 moles of Mg react with 3 moles of N₂ to form Mg₃N₂ (3Mg + N₂ → Mg₃N₂), the moles of product formed are: 1 mole 2 moles 3 moles 0.5 moles Limiting and Excess Reactants
In the reaction 2H₂S + 3O₂ → 2SO₂ + 2H₂O, 68g of H₂S (2 mol) reacts with 48g of O₂ (1.5 mol). The moles of SO₂ formed are: 2 moles 1.5 moles 1 mole 3 moles Limiting and Excess Reactants
If 12g of C (1 mol) is reacted with 40g of O₂ (1.25 mol) to form CO₂, the mass of excess O₂ left is: 8 g 12 g 24 g 32 g Limiting and Excess Reactants
From the reaction above (34g NH₃ and 64g O₂), the maximum moles of NO that can be formed are: 2 moles 4 moles 1.6 moles 5 moles Limiting and Excess Reactants
For the reaction 4NH₃ + 5O₂ → 4NO + 6H₂O, 34g of NH₃ (2 mol) and 64g of O₂ (2 mol) are mixed. The limiting reactant is: NH₃ O₂ NO H₂O Limiting and Excess Reactants
50g of CaCO₃ (0.5 mol) is heated (CaCO₃ → CaO + CO₂). If 22g of CaO (0.39 mol) is produced, the mass of unreacted CaCO₃ is: 50 g 22 g 11 g 0 g Limiting and Excess Reactants
From the reaction above (22.4 dm³ N₂ and 44.8 dm³ H₂), the volume of the excess reactant (N₂) remaining is: 11.2 dm³ 7.4 dm³ 14.9 dm³ 22.4 dm³ Limiting and Excess Reactants
