Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength. Concept Introduction : There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

Question

Want to see the full answer?

Answer 1

Question

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

2. Describe some of the vibrational mode at stretching and bending associated with Infrared Spectroscopy. Draw representative structure denoting such vibrational modes.

Part 3B Set 2. Can 1H NMR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. Predict the 1H NMR spectrum for each compound (include integration, multiplicity, and approximate chemical shift). Either draw the actual spectrum or put in a data table format.

(e) Wavenumbers are the most common unit used to specify infrared absorptions. State the relationship between wavenumber and wavelength, and show how wavenumber is related to energy. (f) Explain why stretching frequencies decrease from C−Cl to C−Br to C−I.

Answer 2

Question

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Answer 6

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

Answer 7

Chapter 8.2, Problem 6E

(a)

Interpretation Introduction

Interpretation:

Out of C-C triple bond and C-N triple bond, that appears at higher wave number in IR spectrum needs to be determined given that both have same strength.

Concept Introduction :

There is large variance in force constant with small changes to bond length. The wavenumber is inversely proportional to square root of reduced mass. Hence, there is increase in reduced mass with decrease in wavenumber.

Answer 8

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Answer 9

(b)

Interpretation Introduction

Interpretation:

Whether the reduced mass or stretching frequencies of C-N is in accordance with experimental data or not needs to be determined.

Concept Introduction :

Small changes in bond length leads to large variances in force constant. Also, it is known that wavenumber is inversely proportional to square root of reduced mass. Therefore, decrease in wavenumber is associated with reduced mass.

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 13

Ch. 8.2 - Prob. 1E Ch. 8.2 - Prob. 2E Ch. 8.2 - Prob. 3E Ch. 8.2 - Prob. 4E Ch. 8.2 - Prob. 5E Ch. 8.2 - Prob. 6E Ch. 8.2 - Prob. 7E Ch. 8.2 - Prob. 8E Ch. 8.2 - Prob. 9E Ch. 8.2 - Prob. 10E

Solution Summary: The author explains that C-C triple bond has a large variance in force constant and the wavenumber is inversely proportional to square root of reduced mass. The stretching vibration of A-B bond is calculated using equation

Concept explainers

Videos

Want to see the full answer?

Chapter 8 Solutions