Problem: Consider the following reaction: 2NO(g) + 5H2 (g) → 2NH3 (g) + 2H2O(g).   A reaction mixture initially contains 5 moles of NO and 10 moles of H2.Without doing any calculations, determine which of the following best represents the mixture after the reactants have reacted as completely as possible.  Explain your reasoning.a) 1 mol NO, 0 mol H2 ,4 mol NH3, 4 mol H2Ob) 0 mol NO, 1 mol H2, 5 mol NH3, 5 mol H2O c) 0 mol NO, 0 mol H2, 4 mol NH3, 4 mol H2Od) 3mol NO, 5 mol H2, 2 mol NH3, 2 mol H2O

FREE Expert Solution

Balanced equation: 2NO(g) + 5H2 (g) → 2NH3 (g) + 2H2O(g)

  • Mole to mole comparison: 
    • 2 moles of NO react with 5 moles of H2
    • limiting reactant → gets used up in a complete reaction
      • produces least amount of products
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Problem Details

Consider the following reaction: 2NO(g) + 5H2 (g) → 2NH3 (g) + 2H2O(g).   A reaction mixture initially contains 5 moles of NO and 10 moles of H2.


Without doing any calculations, determine which of the following best represents the mixture after the reactants have reacted as completely as possible.  Explain your reasoning.


a) 1 mol NO, 0 mol H2 ,4 mol NH3, 4 mol H2O

b) 0 mol NO, 1 mol H2, 5 mol NH3, 5 mol H2

c) 0 mol NO, 0 mol H2, 4 mol NH3, 4 mol H2O

d) 3mol NO, 5 mol H2, 2 mol NH3, 2 mol H2O

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