If One Starts with Pure NO₂(g) at a Pressure of 0.500

question 117

Multiple Choice

If one starts with pure NO₂(g) at a pressure of 0.500 atm, the total pressure inside the reaction vessel when 2NO₂(g) $\rightleftharpoons$ 2NO(g) + O₂(g) reaches equilibrium is 0.674 atm. Calculate the equilibrium partial pressure of NO₂.

• A) 0.152 atm
• B) 0.174 atm
• C) 0.200 atm
• D) 0.326 atm
• E) The total pressure cannot be calculated because K_p is not given

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