Consider the Reaction 2NO₂(g) N₂O₄(g); $\Delta$ H° = -568 KJ $\Delta$

question 8

Multiple Choice

Consider the reaction 2NO₂(g) N₂O₄(g) ; $\Delta$ H° = -56.8 kJ $\Delta$ S° = -175 J/K
In a container (at 298 K) , N₂O₄(g) and NO₂(g) are mixed with initial partial pressures of 2.4 atm and 0.42 atm, respectively. Which of the following statements is correct?

• A) The final total pressure must be known to answer this question.
• B) The system is at equilibrium at these initial pressures.
• C) Some NO₂(g) will dimerize to form N₂O₄(g).
• D) Some N₂O₄(g) will decompose into NO₂(g).
• E) None of these statements is correct.

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