The reaction Cr(NH₃)₆³⁺(aq) + 3en(aq)$\leftrightarrow$Cr(en)₃³⁺(aq) + 6NH₃(aq) Where en represents ethylenediamine, has a small value for the enthalpy change, $\Delta$H_rxn, yet the free-energy change is large because ________

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The free-energy change being large suggests that the entropy change is also large and positive. This can be due to an increase in the number of particles or degrees of freedom, or a change from a more ordered to a more disordered state. The fact that the enthalpy change is small suggests that the reaction does not release or absorb much heat, and therefore the change in entropy is the driving force for the free-energy change.

The Reaction Cr(NH3)63+(aq) + 3en(aq) ↔\leftrightarrow↔ Cr(en)33+(aq) + 6 NH3(aq) Where En Represents Ethylenediamine, Has a

The Reaction
Cr(NH₃)₆³⁺(aq) + 3en(aq) $\leftrightarrow$ Cr(en)₃³⁺(aq) + 6NH₃(aq)
Where En Represents Ethylenediamine, Has a