If in the following mechanism, the entering Y ligand could not follow the top path but follows the middle and bottom paths with equal probability, what percent of the product complex will consist of the trans isomer?  Group of answer choices 66.67% 100% 50% 33.33%

The Palladium complex shown in the reaction scheme below will catalyze the addition of SiH4 to an alkene.  Identify the reaction types.  A. B. C. .D. E.?

Q2

8) Reaction of methoxybenzene with fuming HNO3/ H2SO4 yields ortho substituted product. Circle the most stable sigma complex which would yield the product. OCH 3 H NO₂ OCH 3 H NO₂ OCH3 H NO₂ OCH 3 H NO₂ H3CO_ H NO₂

The first observation that this reaction is not a typical ligand substitution was the dependence on the pKb of the incoming ligand (using alkoxides) on the rate of substitution. It has been hypothesized that this is a base-hydrolysis mechanism. The key steps are shown below.   [CoCl(NH3)5]2+  +  OH–  →  [CoCl(NH2)(NH3)4]+                (1) [CoCl(NH2)(NH3)4]+  →  [Co(NH2)(NH3)4]2+  +   Cl–                  (2) [Co(NH2)(NH3)4]2+  +  H2O  →  [Co(OH)(NH3)5]2+  + NH3  (3)   (2) Our standard rate laws for associative and dissociative ligand substitution are rate = k[ML6][L’] and rate = k[ML6], respectively. Derive a rate law for the base-hydrolysis ligand substitution above where equation 1 is the rate determining step.

4. [a] What can one conclude regarding the nature of the transition state structure for the following cases [i] AS *> "tighter" or "looser" in the transition structure than at the start? > 0, and [ii] AS +<0? In particular, is the transition state structure

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Can someone please solve this imcluding the mechanism arrows

a. Rank by stability of arenium ion (also called sigma complex) upon bromination. The arenium ion that is the most stable is 1, while the arenium ion that is the least stable is 5. A A Para Br H -H Meta Para -H Br Br Br H мета Br H