The equilibrium constant of the reaction 2 X (g) = Y (g) + Z(g) is found to fit the expression Ink = A + B/T + C/T2 between 300K and 600K, with A = -1.09, B = -1003K and C = 1.46 x 105 K2. Calculate the standard reaction entropy, J K- 1mol-1, at 338K. (2 decimal places)

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