For the reaction Cr(C6H6)2 (s) --> Cr(s) + 2 C6H6 (g), the reaction internal energy change at 1 atm and 538 K is DUrxno(T = 538K) = 8.0 kJ/mol. (a) Estimate the molar enthalpy of reaction at 1 atm and 538 K for the above reaction. (b) If the standard molar enthalpy of formation for C6H6 at 1 atm and 538 K is about DHfo (C6H6 (g)) =  84 kJ/mol, estimate the standard enthalpy of formation of Cr(C6H6)2 (s) at 1 atm and 538 K.

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