- 1. The rate constants of the exchange of the three leaving ligands (L) on the complex (Co(CN)slp for the following reaction at 25C are given in the table below. Co(CN):L|H20 - Co(CN)sH2022 + L L k (s:') Br 6.3 x 105 NCS 5.0 x 109 NO, 2.7 x 100 a) Based on the data on the table, is this reaction dissociative (D) or associative (A) mechanism? Justify. (1 Mark) b) Which leaving ligand (L) shows the strongest Co-L bond? Explain. (2 Mark) 2. For the following reaction, decide whether it favors the first order (SN) or second order (Sw) pathway? Give reason. 2 Marks) Cr(CO).] + PfC.Hg) -- (Cr(CO)s PC-H)3] + CO