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How is DeltaG related yo DeltaH and T De...

How is `DeltaG` related yo `DeltaH and T DeltaS`? What is the meaning of `DeltaG =0`?

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Which of the following is true during adsorption? a. DeltaG , DeltaH , and DeltaS all are negative. b. DeltaG is negative, but DeltaH and DeltaS is positive. c. DeltaG and DeltaH are negative, but DeltaS is positive. d. DeltaG and DeltaS are negative, but DeltaH is positive.

The relation DeltaG=DeltaH-TDeltaS was given by

Gibbs-Helmoholtz equation relates the free energy change to the enthalpy and entropy changes of the process as (DeltaG)_(PT) = DeltaH - T DeltaS The magnitude of DeltaH does not change much with the change in temperature but the enrgy factor T DeltaS changes appreciably. Thus, spontaneity of a process depends very much on temperature. For the reaction at 298K, 2A +B rarr C Deltah = 100 kcal and DeltaS = 0.020 kcla K^(-1) . If DeltaH and DeltaS are assumed to be constant over the temperature range, at what temperature will the reaction become spontaneous?