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Gibbs Free Energy and Equilibrium Video Lecture | Chemistry for JEE Main & Advanced
FAQs on Gibbs Free Energy and Equilibrium Video Lecture - Chemistry for JEE Main & Advanced
| 1. What is Gibbs Free Energy? |  |
Ans. Gibbs Free Energy is a thermodynamic potential that measures the maximum reversible work that can be performed by a system at constant temperature and pressure. It is denoted by the symbol G and is used to determine whether a chemical reaction will occur spontaneously or not.
| 2. How is Gibbs Free Energy related to equilibrium? | |
Ans. Gibbs Free Energy is closely related to equilibrium as it helps us determine whether a chemical reaction will proceed spontaneously in the forward or reverse direction. If the Gibbs Free Energy change (∆G) is negative, the reaction is spontaneous and will proceed in the forward direction, towards equilibrium. If ∆G is positive, the reaction is non-spontaneous and will proceed in the reverse direction. If ∆G is zero, the system is at equilibrium.
| 3. How can Gibbs Free Energy be calculated? | |
Ans. Gibbs Free Energy can be calculated using the equation ∆G = ∆H - T∆S, where ∆G is the change in Gibbs Free Energy, ∆H is the change in enthalpy, T is the temperature in Kelvin, and ∆S is the change in entropy. The values of ∆H and ∆S can be obtained from thermodynamic data tables or by performing experiments.
| 4. What does a negative Gibbs Free Energy (∆G) indicate? | |
Ans. A negative ∆G indicates that the reaction is spontaneous and can proceed in the forward direction. This means that the products of the reaction are more stable than the reactants, and the reaction will release free energy. The magnitude of ∆G indicates the extent to which the reaction will proceed towards equilibrium.
| 5. Can Gibbs Free Energy be used to predict the direction of a reaction? | |
Ans. Yes, Gibbs Free Energy can be used to predict the direction of a reaction. If ∆G is negative, the reaction is spontaneous and will proceed in the forward direction. If ∆G is positive, the reaction is non-spontaneous in the forward direction and will proceed in the reverse direction. If ∆G is zero, the system is at equilibrium and the reaction is balanced.
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