When ethene is treated in a calorimeter with H2 and a Pt catalyst, the heat of reaction is found to be -137 kJ>mol XXXXXXXXXXkcal>mol), and the reaction goes to completion. When the reaction takes...

When ethene is treated in a calorimeter with H2 and a Pt catalyst, the heat of reaction is found to be -137 kJ>mol (-32.7 kcal>mol), and the reaction goes to completion. When the reaction takes place at 1400 °K, the equilibrium is found to be evenly balanced, with Keq = 1. Compute the value of ∆S for this reaction.