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Textbook Expert
Textbook ExpertVerified Tutor
24 Nov 2021

Given information

The energy available for doing a useful work is known as Gibbs free energy. The free energy change of a reaction under nonstandard conditions is expressed by the relation,

 

At equilibrium, the value of is always equal in magnitude but opposite in sign to the value of . Therefore, the change in Gibbs free energy is equal to zero.

 

Step-by-step explanation

Step 1.

The value of is calculated by the formula,

Where,

  • is the partial pressure of .

  • is the partial pressure of .

  • is the partial pressure of .

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