The concept of free energy allows prediction of spontaneity of a process by considering the

changes in ________ and ________ during the process.
A) entropy; temperature
B) enthalpy; mass
C) enthalpy; entropy
D) enthalpy; temperature
E) entropy; mass

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To determine the spontaneity of a process, we need to consider the changes in both enthalpy and entropy during the process.

Enthalpy (H) is a measure of the total heat content of a system and represents the potential energy available for work. It describes the heat transfer that occurs in a system at constant pressure.

Entropy (S) is a measure of the disorder or randomness of a system. It represents the dispersal of energy and describes the number of ways in which particles can be arranged.

The concept of free energy (G) ties together enthalpy and entropy. Free energy is a thermodynamic potential that provides information about whether a process is spontaneous or non-spontaneous.

The correct answer is option C) enthalpy; entropy.

The correct answer is C) enthalpy; entropy.

The concept of free energy, often represented by the symbol ΔG (delta G), allows prediction of spontaneity by considering the changes in enthalpy (ΔH) and entropy (ΔS) during a process. The equation for free energy is ΔG = ΔH - TΔS, where ΔG is the change in free energy, ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy. By considering the changes in enthalpy and entropy, we can determine whether a process will be spontaneous (ΔG < 0) or non-spontaneous (ΔG > 0).