Free energy change for a reversible process is
Correct answer: C. Equal to 0
- A. >0
- B. <0
- C. Equal to 0
- D. Unpredictable
Explanation
n a reversible process, the system and its surroundings can spontaneously interconvert between two states. This means the reaction can proceed in both the forward and reverse directions without any external intervention.The free energy change (ΔG) is a key thermodynamic parameter that determines the spontaneity of a process. It relates the enthalpy change (ΔH), entropy change (ΔS), and temperature (T):ΔG = ΔH - TΔSFor a reversible process at equilibrium, the free energy change is zero:ΔG = 0This indicates that the forward and reverse reactions occur at equal rates, resulting in no net change in the system. The system and its surroundings are in a state of dynamic equilibrium.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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