Question 3A The isomerisation reaction of two cobalt(III) complexes (X = OH or N3) shown below was studied and the data

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Question 3a The Isomerisation Reaction Of Two Cobalt Iii Complexes X Oh Or N3 Shown Below Was Studied And The Data 1 (71.55 KiB) Viewed 58 times

Question 3A The isomerisation reaction of two cobalt(III) complexes (X = OH or N3) shown below was studied and the data in the first table was obtained. Separately, the equilibrium constant was determined, included in the second table. k₁ cis-[Co(en)₂(H₂O)(X)]²+ = trans-[Co(en)2(H₂O)(X)]²+ k-1 Kinetic data [Co(en)2(H₂O)(OH)]²+ [Co(en)2(H₂O)(N3)]²+ [cis]-[cis]eq (M) time (s) [cis]-[cis]eq (M) time (s) 1.00×10-³ 0 1.0×10-³ 0 2.13×104 300 4.4×104 5,000 7.6x10-⁹ 500 2.0×104 10,000 Thermodynamics data [Co(en)2(H₂O)(OH)]²+ [Co(en)2(H₂O)(N3)]²+ K 0.47 K 0.74 a. For each complex, which isomer is favoured thermodynamically? b. Use the graphical method to find the observed rate constant. Use this and K to determine the two rate constants, k, and k., for the complex.