Q20.65 P - Chemistry: Molecular Nature Of Matter And Change

Question

How is the free energy change of a process related to the work that can be obtained from the process? Is this quantity of work obtainable in practice? Explain.

Step-by-Step Solution

Answer

If the process is run is in a slower or more controlled fashion, the actual amount of available work approaches $\text{ΔG}$ .

Step 1: Definition of Concept

Solubility: The maximum amount of solute that can be dissolved in the solvent at equilibrium is defined as solubility.

Constant of soluble product: For equilibrium between solids and their respective ions in a solution, the solubility product constant is defined. In general, the term "solubility product" refers to water-equilibrium insoluble or slightly soluble ionic substances.

Step 2: Explain how is the free energy change of a process related to the work that can be obtained from the process

The maximum useful work obtained from a spontaneous process is $\text{ΔG}$ . Due to energy lost as heat, the actual amount of useful work is less.

The actual amount of available work approaches if the process is run at a slower or more controlled rate $\text{ΔG}$ .