5.00 moles of N2 and 8.00 moles of H2 are placed in an empty container, the container is...

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5.00 moles ofN₂ and 8.00 molesof H₂ are placedin an empty container, the container is heated to 887 degreesCelsius, and a catalyst is added that catalyzes the rxn. of thesegases to form NH₃ as the only product. At equilibrium 1.00 mole ofNH₃ is found to bepresent. Find number of moles N₂ and moles H₂ present at equilibrium.
* I think that the concentrationsof the reactants changes by 1 mole but I'm not enitrely sure ifthat is correct.

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4.4 Ratings (847 Votes)

N2Â Â Â Â +Â Â Â Â 3 H2Â Â <-----------------------> 2 NH3

5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0Â Â Â Â Â Â Â ----------------------> initial

-xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â -3xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â +2xÂ Â Â Â Â ---------------------> decomposition

5-xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â 8-3xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2xÂ Â Â ---------------------------> equilibrium

equilibriumÂ Â Â NH3 moles = 1.0

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2x = 1.0

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â x = 0.5

equilibrium moles of N2 :Â Â Â Â 5 -x = 5 -0.5Â Â Â Â Â Â = 4.5 mol

equilibrium moles of H2 : Â Â 8 -3x = 8 - 3 x 0.5 = 6.5 mol

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