The Equilibrium Constants (Expressed in Atm) for the Chemical Reaction

question 63

Multiple Choice

The equilibrium constants (expressed in atm) for the chemical reaction N₂(g) + O₂(g) 2NO(g) are K_P = 1.1 × 10^-3 and 3.6 × 10^-3 at 2200 K and 2500 K, respectively.
Which statement is true?

• A) The reaction is exothermic, ΔHº < 0.
• B) The partial pressure of NO(g) is less at 2200 K than at 2500 K.
• C) K_p is less than K_c by a factor of (R
• T).
• D) The total pressure at 2200 K is the same as at 2500 K.
• E) Higher total pressure shifts the equilibrium to the left.

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