The relative pK a values of cyclopentadiene and cycloheptatriene have to be estimated. Concept Introduction: Criteria for Aromaticity : 1. A molecule must be cyclic. 2. Every atom in the ring must have a p-orbital. 3. The molecule must be planar. 4. π- Cloud must contain an odd number of pairs of π-electrons .

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Answer 1

Question

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

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Experiment 1 Data Table 1: Conservation of Mass - Initial Mass Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Reaction Mass of test tube and 5.0% HC₂H₂O2 (g) # (A) (B) Mass of NaHCO, (g) Mass of balloon and NaHCO, (g) (C) 0.10 1 0829 14.38g 0.20 2 0.929 14.29g 0.35 1.00g 3 14.25g 0.50 1.14g 14.29 Experiment 1 Data Table 2: Moles of HC2H3O2 Reaction Volume of Mass of Moles of HC₂H₂O₂ 5.0% Vinegar (g) (ML) 5.0 0.25 0042 mol 2 5.0 0.25 0042 mol 3 5.0 0.25 0042 mol 5.0 0.25 0042 mol Experiment 1 Data Table 3: Moles of NaHCO3 Reaction Mass of NaHCO (g) 10g 20g 35g 50g Experiment 1 Data Table 4: Theoretical Yield of CO₂ Reaction # 1 2 3 Experiment 1 Total mass before reaction (g) (D=A+C) 15.29 15.21g 15.25g 15.349 Exercise 1 Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Data Table 1 Data Table 2 DataTable 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Moles of NaHCO 0012 mol 0025 mol 0044 mol 0062 mol…

The chemical reaction you investigated is a two-step reaction. What type of reaction occurs in each step? How did you determine your answer?

Answer 2

Question

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

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Answer 3

Question

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

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Answer 4

Question

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

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Answer 5

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

Answer 6

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

Answer 7

Chapter 8.18, Problem 52P

a)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopentadiene and cycloheptatriene have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

1. A molecule must be cyclic.

2. Every atom in the ring must have a p-orbital.

3. The molecule must be planar.

4. π- Cloud must contain an odd number of pairs of π-electrons.

Answer 8

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

Answer 9

b)

Interpretation Introduction

Interpretation: The relative pKa values of cyclopropene and cyclopropane have to be estimated.

Concept Introduction:

Criteria for Aromaticity:

5. A molecule must be cyclic.

6. Every atom in the ring must have a p-orbital.

7. The molecule must be planar.

8. π- Cloud must contain an odd number of pairs of π-electrons.

Answer 10

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Answer 12

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Answer 13

Ch. 8.1 - Prob. 1P Ch. 8.1 - Prob. 2P Ch. 8.4 - Prob. 3P Ch. 8.5 - Prob. 4P Ch. 8.5 - Prob. 6P Ch. 8.6 - a. Predict the relative bond lengths of the three...Ch. 8.6 - Prob. 8P Ch. 8.6 - Prob. 9P Ch. 8.6 - Prob. 10P Ch. 8.7 - Prob. 11P

Solution Summary: The author explains that the relative values of cyclopentadiene and heptatriene must be estimated. The conjugate base is stabilized by its aromaticity.

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