8. At 1 atm and 900 K, hexane cracks in a gas system. Write down the criteria for the spontaneity of the process and the equations by which these criteria can be calculated. Given the data on the molar enthalpy and entropy of each reaction at a given temperature, estimate approximately which of the two reactions is thermodynamically most probable
Reaction Standard molar enthalpy of reaction, kJ/mol Standard molar entropy of reaction, J/(mol*K)
2C6H14=C12H26 H2 226.3 251.6
C6H14=C5H9CH3, cycle H2 48.6 63.84

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