Question

Using the table of bond dissociation enthalpies (Appendix 3), estimate the BDE of each indicated bond in cyclohexene.

Short answer

Question: Estimate the bond dissociation enthalpies (BDE) for the following bonds in cyclohexene: 1. C1-C2 (the double bond) 2. C1-C6 (the single bond connecting C1 and C6) 3. C2-C3 (the single bond connecting C2 and C3) Answer: The estimated bond dissociation enthalpies (BDE) for the indicated bonds in cyclohexene are: 1. BDE of C1-C2 (the double bond) is approximately 614 kJ/mol. 2. BDE of C1-C6 (the single bond connecting C1 and C6) is approximately 347 kJ/mol. 3. BDE of C2-C3 (the single bond connecting C2 and C3) is approximately 360 kJ/mol.

Step-by-step solution

Draw the structure of cyclohexene

To begin with, let's draw the structure of cyclohexene. Cyclohexene is a six-membered ring with a carbon-carbon double bond. It has the following structure: ``` _ _ C1 --- C2 --- C3 | | C6 --- C5 --- C4 ```

Identify the bonds for which BDE needs to be estimated

Now that we have the structure of cyclohexene, let's identify the bonds for which we need to estimate BDE: 1. C1-C2 (the double bond) 2. C1-C6 (the single bond connecting C1 and C6) 3. C2-C3 (the single bond connecting C2 and C3)

Look up BDE values in the table

Using the table of bond dissociation enthalpies (Appendix 3), let's find the BDE values for each bond identified in Step 2. 1. C1-C2 (the double bond): Since it's a carbon-carbon double bond, the corresponding value in the table is around 614 kJ/mol. 2. C1-C6 (the single bond connecting C1 and C6): For a carbon-carbon single bond connecting two primary (1°) carbons, the BDE value is around 347 kJ/mol. 3. C2-C3 (the single bond connecting C2 and C3): Since the bond connects a secondary carbon (C2) to a primary carbon (C3), the corresponding BDE value is around 360 kJ/mol.

Present the estimated BDE values

Now that we have found the BDE values from the table, let's present them as the final answer: 1. BDE of C1-C2 (the double bond) is approximately 614 kJ/mol. 2. BDE of C1-C6 (the single bond connecting C1 and C6) is approximately 347 kJ/mol. 3. BDE of C2-C3 (the single bond connecting C2 and C3) is approximately 360 kJ/mol. These are the estimated bond dissociation enthalpies for the indicated bonds in cyclohexene.