Final answer:
The equation for the total entropy change during a chemical reaction is 2) ΔS = ΔG/T. The entropy change is given by the sum of the entropies of the products minus the sum of the entropies of the reactants, with coefficients taken into account.
Step-by-step explanation:
The equation for the total entropy change during a chemical reaction is ΔS = ΔG/T.
The entropy change in a chemical reaction is given by the sum of the entropies of the products minus the sum of the entropies of the reactants. The coefficients of each component must be taken into account in the entropy calculation.
For example, the equation for the formation of liquid water from gaseous hydrogen and oxygen can be expressed as nS° (products) - mS° (reactants).