AG Substance (Jimol) M203 M(s) O2(g) Consider the decomposition of a metal oxide

Question

AG Substance (Jimol) M203 M(s) O2(g) Consider the decomposition of a metal oxide to its elements, where M represents a generic metal. -10.50 2Ms)o 0 What is the standard change in Gibbs energy for the reaction, as written, in the forward direction? Number Grin =110.50 | kJ / mol What is the equilibrium constant of this reaction, as written, in the forward direction at 298 K? Incorrect. Use the formula Number r-11-0485 but before solving for K, confirm that T is in kelvins, and-RT has the same units as G. What is the equilibrium pressure of Ozg) over M(s) at 298 K? Number Fo, = 11.133 atm

Explanation / Answer

DG0 = - RTlnk

10.5*10^3   = -8.314*298lnk

K = 0.0144

From equation,

K = pO2^(3/2)

0.0144 = x^(3/2)

x = pO2 = 0.06 atm

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