The question concerns the calculation of Gibbs free energy, enthalpy, and entropy changes for chemical reactions to assess reaction feasibility. Gibbs free energy determines spontaneity, and its calculation relies on standard enthalpy and entropy values. Hess's law can be used to calculate enthalpy changes for reactions.
The question involves thermodynamics in chemistry, specifically the calculation of Gibbs free energy (G), enthalpy (ΔH), and entropy (ΔS) changes for chemical reactions. Gibbs free energy, a state function that predicts the spontaneity of a reaction at constant pressure and temperature, is defined by the equation ΔG = ΔH - TΔS. Entropy is a measure of the disorder or randomness of a system. To calculate these values, one would need the standard enthalpies (ΔH°f) and entropies (S°) of formation for the reactants and products involved in the reaction. Once these values are known, we can use Hess's law to compute reaction enthalpies by adding the enthalpies of formation of the products and subtracting those of the reactants.
To assess the feasibility of a reaction, if ΔG is negative, the reaction is spontaneous; if it is positive, the reaction is nonspontaneous; and if it is zero, the reaction is at equilibrium. For the entropy change (ΔS), positive values generally favor spontaneity, implying increased disorder.