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Gibb's Free Energy

For a thermod...

Question

For a thermodynamically spontaneous process the change in free energy is __.

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Solution

A spontaneous process is one that needs no intervention from outside. It is also called a irreversible reaction. It releases free energy and moves to a lower, thermodynamically more stable state. The change in free energy is negative.

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For a thermodynamically spontaneous process the change in free energy is __.

For a thermodynamically spontaneous process the change in free energy is __.

Q. Assertion :The thermodynamic factor which determines the spontaneity of a process is the free energy. For a process to be spontaneous the free energy must be -ve Reason: The change in free energy is related to the change in enthalpy and change in entropy. The change in entropy for a process must always be positive if it is spontaneous.

Q. Identify the correct statement regarding a spontaneous process
1) For a spontaneous process in an isolated system, the change in entropy is positive
2) Endothermic process are never spontaneous
3) Exothermic processes are always spontaneous (4) Lowering of energy in the reaction process is the only criterion for spontaneity

Q. For a reaction to be spontaneous, the sign of Gibbs Free Energy change

Δ G

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