What Is the Equilibrium Constant for Reaction Below at 25 $\leftrightharpoons$

question 42

Multiple Choice

What is the equilibrium constant for reaction below at 25 °C? (R = 8.314 J/K?mol) 2 NO(g) + O₂(g) $\leftrightharpoons$ 2 NO₂(g) ; ?_fG° [NO(g) ] = +86.6 kJ/mol and ?_fG° [NO₂(g) ] = +51.2 kJ/mol.

• A) 3.9 × 10^-13
• B) 1.0 × 10-¹¹
• C) 2.6 × 10¹²
• D) 1.6 × 10⁶
• E) 3.8 × 10²⁸

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