Question

The equilibrium constant expression for a gas reaction is, 
\(K_c = \frac {[NH_3]^4 [O_2]^5 }{[NO_4] [H_2O_6]}\)
Write the balanced chemical equation corresponding to this expression.

Answer 1

Given equilibrium constant expression:

K_c = [NH₃]⁴ [O₂]⁵ / [NO₄] [H₂O]⁶

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Step 1: Identify reactants and products

• Species in the numerator are products
• Species in the denominator are reactants

Products:
NH₃, O₂

Reactants:
NO₄, H₂O

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Step 2: Use powers as stoichiometric coefficients

• Coefficient of NH₃ = 4
• Coefficient of O₂ = 5
• Coefficient of NO₄ = 1
• Coefficient of H₂O = 6

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Balanced chemical equation:

NO₄(g) + 6H₂O(g) ⇌ 4NH₃(g) + 5O₂(g)

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Final Answer:

The balanced chemical equation corresponding to the given equilibrium constant expression is:

NO₄(g) + 6H₂O(g) ⇌ 4NH₃(g) + 5O₂(g)