Please help me I am trying to study for an upcoming final and was confused on some of the practice problems. **Question:***Which of the following mechanisms is drawn correctly? Remember to check arrows, formal charges, stereochemistry, and intermediates (if any).*---**Mechanism A:**In Mechanism A, the first diagram shows a molecule with a hydroxyl group (-OH) shown interacting with a carbanion intermediate. Specifically, the hydroxyl ion (-OH) arrows towards the hydrogen atom (H) connected to a carbonyl group (C=O), indicating a deprotonation step.The resulting product is depicted on the right, showing a structure where the hydroxyl ion (OH-) has left, and the carbonyl group has been reformed, with a phenyl (C6H5) ring, methyl group (Me), and carbonyl group (C=O) in a stable formation.---**Mechanism B:**Image B represents a two-step mechanism. 1. The first step shows a structure where the hydroxyl group (OH) leaves, indicating elimination. The arrow directs from the bond between the hydroxyl group and the carbon, leading towards the oxygen, showing the formation of a water molecule. 2. The intermediate formed has a positive charge on the carbon adjacent to the former hydroxyl group shown by the arrow forming a double bond, leading to the final product which features a methyl group and reformed carbonyl group on a phenyl ring.---**Mechanism C:**(Note: The image does not show Mechanism C and only lists diagrams for Mechanism A and Mechanism B.)---**Explanation of Diagrams/Graphs:**- **Mechanism A Diagram:** - Left structure: A six-membered ring (phenyl) with a methyl group (Me), adjacent to a carbon bonded with a hydroxyl group and another carbonyl group. - Right structure: Similar to the left structure, but without the hydroxyl group, depicting the deprotonation step completion.- **Mechanism B Diagram:** - Left structure: A molecule with a hydroxyl group illustrated initially. - Intermediate: Shows a positively charged carbon and a departing water molecule, denoted by arrows indicating electron movement. - Right structure: Final product with the elimination of hydroxyl group oxygen, forming a new structure.This content explains the molecular mechanisms involved, providing visual chemical structures and the steps in the reaction, assisting educational understanding in organic chemistry. ### Chemical Reaction Pathways#### Reaction Pathway C:1. **Initial Structure**: - The first molecule has a benzene ring attached to a complex structure that includes an oxygen bonded to a hydroxy group (OH), a methyl group (Me), and an ethylene bridge (CH₂). The structure features several curved arrows indicating electron movement in a reaction process. Specifically, an electron pair from the oxygen-hydroxy bond is moving to oxygen, making it negatively charged, and another arrow suggests breaking the ethylene bridge.2. **Intermediate Structure**: - Following the defined electron movements, the intermediate structure is formed. Here, the benzene ring is still attached to the main complex, which now has a double-bonded oxygen (carbonyl group) and a separate hydroxy anion (OH⁻).3. **Final Structure**: - The final product of this pathway is obtained after stabilization, forming a ketone. The benzene ring is now directly attached to a carbonyl (C=O) and a methyl group. A five-membered ring (cyclopentane) is also present, completing the structure.#### Reaction Pathway D:1. **Initial Structure**: - Similar to Pathway C, the initial molecule in Pathway D starts with a benzene ring linked to a complex structure featuring a hydroxy group (OH), a methyl group (Me), and a hydroxide anion (OH⁻). Arrow symbols indicate electron pair movements, which will facilitate the reaction.2. **Intermediate Structure**: - During the reaction, electrons shift as indicated by the curved arrows. The intermediate then forms, displaying a benzene ring with a ketone group (carbonyl group) and maintains an ethylene bridge but without the hydroxy group.3. **Final Structure**: - The final product in Pathway D results in the benzene ring attached to a carbonyl group (C=O), a methyl group, and a five-membered ring (cyclopentane) maintaining the overall structure integrity but with a rearrangement.#### Multiple-Choice Question:- _Which of the Initially shown Reactions is represented by Options A, B, C, and D?_ - **O A.** - **O B.** - **O C.** - **O D.**This content provides a detailed step-by-step mechanism for chemical reactions illustrating molecular rearrangements

This reaction follows E1cb mechanism i.e, Elimination Unimolecular conjugate base, that first base…

Answered: Which of the following mechanisms is…

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...