Importance of systematic method for balancing oxidation-reduction reactions should be discussed. Why can’t these equations be balanced readily by inspection should be discussed. Concept Introduction: In order to balance oxidation reduction reactions occur in aqueous solutions, we use half reaction method. In this method, the main reaction is separated into two half reactions which represents the oxidation process and the reduction process. Half reactions are chemical equations that have electrons as reactant or product. The main principle that should be followed to balance oxidation reduction reaction is to balance the number of electrons lost from the reducing agent and number of electrons gained by the oxidizing agent.

Question

. (11pts total) Consider the arrows pointing at three different carbon-carbon bonds in the molecule depicted below. Bond B 2°C. +2°C. < cleavage Bond A • CH3 + 26. t cleavage 2°C• +3°C• Bond C Cleavage CH3 ZC '2°C. 26. E Strongest 3°C. 2C. Gund Largest BDE weakest bond In that molecule a. (2pts) Which bond between A-C is weakest? Which is strongest? Place answers in appropriate boxes. Weakest C bond Produces A Weakest Bond Most Strongest Bond Stable radical Strongest Gund produces least stable radicals b. (4pts) Consider the relative stability of all cleavage products that form when bonds A, B, AND C are homolytically cleaved/broken. Hint: cleavage products of bonds A, B, and C are all carbon radicals. i. Which ONE cleavage product is the most stable? A condensed or bond line representation is fine. 人 8°C. formed in bound C cleavage ii. Which ONE cleavage product is the least stable? A condensed or bond line representation is fine. methyl radical •CH3 formed in bund A Cleavage

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Question

Chapter 18, Problem 38QAP

Interpretation Introduction

Interpretation:

Importance of systematic method for balancing oxidation-reduction reactions should be discussed. Why can’t these equations be balanced readily by inspection should be discussed.

Concept Introduction:

In order to balance oxidation reduction reactions occur in aqueous solutions, we use half reaction method. In this method, the main reaction is separated into two half reactions which represents the oxidation process and the reduction process. Half reactions are chemical equations that have electrons as reactant or product. The main principle that should be followed to balance oxidation reduction reaction is to balance the number of electrons lost from the reducing agent and number of electrons gained by the oxidizing agent.

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. (11pts total) Consider the arrows pointing at three different carbon-carbon bonds in the molecule depicted below. Bond B 2°C. +2°C. < cleavage Bond A • CH3 + 26. t cleavage 2°C• +3°C• Bond C Cleavage CH3 ZC '2°C. 26. E Strongest 3°C. 2C. Gund Largest BDE weakest bond In that molecule a. (2pts) Which bond between A-C is weakest? Which is strongest? Place answers in appropriate boxes. Weakest C bond Produces A Weakest Bond Most Strongest Bond Stable radical Strongest Gund produces least stable radicals b. (4pts) Consider the relative stability of all cleavage products that form when bonds A, B, AND C are homolytically cleaved/broken. Hint: cleavage products of bonds A, B, and C are all carbon radicals. i. Which ONE cleavage product is the most stable? A condensed or bond line representation is fine. 人 8°C. formed in bound C cleavage ii. Which ONE cleavage product is the least stable? A condensed or bond line representation is fine. methyl radical •CH3 formed in bund A Cleavage

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