Final answer:
The '+' symbol indicates an increase in quantities. The correct equation for Gibbs Free Energy change is ΔG = ΔH - TΔS. G honors scientist Josiah Gibbs.
Step-by-step explanation:
The symbol + when referring to changes in Gibbs Free Energy (ΔG), enthalpy (ΔH), and entropy (ΔS) typically indicates an increase in these quantities. For the equations of ΔG, the correct option is a) ΔG = ΔH - TΔS, where ΔG represents the change in Gibbs Free Energy, ΔH is the change in enthalpy, and ΔS is the change in entropy. It is important to note that T is the absolute temperature in Kelvin. The symbol G is in honor of Josiah Gibbs, an American scientist who contributed significantly to thermodynamics.