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The following equation represents the decomposition of a generic diatomic elemen

ID: 633325 • Letter: T

Question

The following equation represents the decomposition of a generic diatomic element in its standard state. 1/2 X2(g) rightarrow X(g) Assume that the standard molar Gibbs energy of formation of X(g) is 5.02 kJ mol-1 at 2000. K and -51.24 kJ mol-1 at 3000. K. Determine the value of K (the thermodynamic equilibrium constant) at each temperature. K at 2000. K = K at 3000. K = Assuming that delta H degree rxn is independent of temperature, determine the value of delta H degree rxn from these data. delta H degree = rxn =

Explanation / Answer

?G = -RTlnK

at 2000K

5020= -8.314*2000*lnk

K=.739

at 3000k

-51240=-8.314*3000*lnK

K=7.76


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