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Question- Part-a) What is the Gibbs free energy change when the activity of a 1mol sample changes from 5.25 to 1.25 @ 298 k?

Part- b) Find the pressure of an ideal gas at which G (subscript m) - G^0(subscript m) = 2.50 kJ/mol @ 298 K.

State the correct Gibbs free energy change

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