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The Connection of Free Energy With Thermodynamic Quantities Video Lecture | CSIR NET Crash Course for Physical Science - CSIR NET Physical Science

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FAQs on The Connection of Free Energy With Thermodynamic Quantities Video Lecture - CSIR NET Crash Course for Physical Science - CSIR NET Physical Science

1. How is free energy connected to thermodynamic quantities?
Ans. Free energy is a thermodynamic potential that measures the maximum work a thermodynamic system can perform at constant temperature and pressure. It is connected to thermodynamic quantities such as enthalpy and entropy through the Gibbs free energy equation, which states that ΔG = ΔH - TΔS.
2. What is the significance of free energy in thermodynamics?
Ans. Free energy is significant in thermodynamics as it helps determine the spontaneity of a process. A negative value of ΔG indicates that a reaction is spontaneous, while a positive value indicates a non-spontaneous reaction. The magnitude of ΔG also provides information about the amount of work that can be extracted from a system.
3. How can free energy be used to predict the equilibrium of a reaction?
Ans. By comparing the free energy change (ΔG) of a reaction to the standard free energy change (ΔG°), one can predict the direction in which a reaction will proceed to reach equilibrium. If ΔG is negative, the reaction will proceed in the forward direction to reach equilibrium, while a positive ΔG indicates that the reverse reaction will be favored.
4. How does free energy relate to the spontaneity of a reaction?
Ans. The sign of the free energy change (ΔG) determines the spontaneity of a reaction. A negative ΔG indicates that the reaction is spontaneous and can proceed without the input of external energy. In contrast, a positive ΔG indicates a non-spontaneous reaction that requires an input of energy to proceed.
5. Can free energy be used to calculate the maximum work that can be obtained from a system?
Ans. Yes, free energy can be used to calculate the maximum work that can be obtained from a system. The maximum work obtainable from a system is equal to the negative of the change in free energy (ΔG) of the system, as given by the equation Wmax = -ΔG.
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