Final answer:
In thermodynamics, the necessary water temperature can be calculated using Gibbs free energy (G). By inserting the values of enthalpy change (ΔH) and entropy change (ΔS) into the definition of G, you can solve for the temperature (T).
Step-by-step explanation:
In thermodynamics, there is an alternate method to calculate the necessary water temperature using the concept of Gibbs free energy (G). It involves inserting the values of enthalpy change (ΔH) and entropy change (ΔS) into the definition of G (Equation 19.6.2 or 19.7.2), setting G to 0, and solving for the temperature (T).