Given the following mechanism for the formation of a chelate complex,

derive the rate law for the formation of the chelate. Discuss the step that is different from that for two monodentate ligands. The formation of chelates with strongly bound ligands occurs at the rate of formation of the analogous monodentate complex, but the formation of chelates of weakly bound ligands is often significantly slower. Assuming an Id mechanism, explain this observation.

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[Ni(OH₂)²+ + L-L =[Ni(OH₂)]²+,L-L KE, rapid [Ni(OH₂) 1²+,L-L =[Ni(OH₂),L−L P²+ + H₂Ok,k [Ni(OH₂),L-L + [Ni(OH₂),L-L P+ + H₂Ok,k