What Is the Equilibrium Constant for the Reaction Below at 25

question 55

Multiple Choice

What is the equilibrium constant for the reaction below at 25 ^$\circ$ C? (R = 8.314 J/K.mol)

MgCO₃(s) MgO(s) + CO₂(g)

Given $\Delta$ _fG ^$\circ$ [MgCO₃(s) ] = -1028.2 kJ/mol, $\Delta$ _fG [MgO(s) ] = -568.8 kJ/mol,and $\Delta$ _fG ^$\circ$ [CO₂(g) ] = -394.4 kJ/mol.

• A) 4.0 \(\times\) 10^-12
• B) 0.97
• C) 1.0
• D) 1.0 \(\times\) 10⁴
• E) 2.5 \(\times\) 10¹¹

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