Given reaction:SO2(g) + NO2(g) ⇌ SO3(g) + NO(g)
• Kc is an equilibrium expression:
▪ only gaseous species are included in the equilibrium expression
▪ the coefficient of each compound in the reaction equation will be the exponent of the concentrations in the equilibrium expression
A 1.00-L flask was filled with 2.00 moles of gaseous SO 2 and 2.00 moles of gaseous NO2 and heated. After equilibrium was reached, it was found that 1.30 moles of gaseous NO was present. Assume that the reaction
SO2(g) + NO2(g) ⇌ SO3(g) + NO(g)
occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
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