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1.5 Limiting Reactants (Solution)

Lesson Summary

1. Hydrogen gas reacts with oxygen gas to form water: H2 + O2 → H2O

When the molecules in the diagram react to form the maximum amount of water, what is the limiting reactant and how many molecules of water can be formed?

A. O2 is limiting and 8 molecules of water will be formed
B. O2 is limiting and 4 molecules of water will be formed
C. H2 is limiting and 6 molecules of water will be formed
D. H2 is limiting and 3 molecules of water will be formed
E. H2 is limiting and 12 molecules of water will be formed

2. Ammonia is a major component of household cleaner. It is synthesized industrially via the Haber-Bosch process according to the reaction: N2 + 3 H2 → 2 NH3

If a mixture of 14 g of N2 and 10 g of H2 produced 0.40 moles of ammonia, what is the percent yield of the reaction?

A. 24 %
B. 20 %
C. 80 %
D. 40 %
E. 60 %