The structure of the compound has to be identified from the given data. Concept introduction: Spectroscopy: It is study of the interaction of matter and electromagnetic radiation, a continuum of different types of electromagnetic radiation each associated with a particular energy range makes up the electromagnetic spectrum. IR frequency (cm -1 ): It is the number of wave crests that pass by a given point in one second frequency has units of hertz (Hz). Stretch vibrations: It is a vibration occurring along the line of the bond a stretching vibration changes the bond length. Bending vibrations: It is a vibration that does not occur along the line of the bond, bending vibration changes the bond angle. Mass spectroscopy: Interpreting a mass spectrum: Each m/z values is the m/z value of one the fragments to the nearest whole number. The peak with the highest m/z value in the molecular ions (M + ), the fragment that results when the molecules lose electrons as result of being bombarding by the electron beam. The m/z value of the molecular ion gives the molecular mass of the compound. Peaks with smaller m/z values, fragment ion peak represent positively charged fragments of the molecular ion. Base peak of mass spectrum: The base peak is the one of highest (or) tallest peak, it has great abundance. It has the greatest relative abundance because it is generally the most stable positively charged fragment. Given information: The absorption value is at 1584, 1478, and 1446 cm -1 and it has M + = 114, 112 and 77.

Question

The table includes macrostates characterized by 4 energy levels (&) that are equally spaced but with different degrees of occupation. a) Calculate the energy of all the macrostates (in joules). See if they all have the same energy and number of particles. b) Calculate the macrostate that is most likely to exist. For this macrostate, show that the population of the levels is consistent with the Boltzmann distribution. macrostate 1 macrostate 2 macrostate 3 ε/k (K) Populations Populations Populations 300 5 3 4 200 7 9 8 100 15 17 16 0 33 31 32 DATO: k = 1,38×10-23 J K-1

Answer 1

Question

Chapter 12.SE, Problem 50AP

Interpretation Introduction

Interpretation:

The structure of the compound has to be identified from the given data.

Concept introduction:

Spectroscopy:

It is study of the interaction of matter and electromagnetic radiation, a continuum of different types of electromagnetic radiation each associated with a particular energy range makes up the electromagnetic spectrum.

IR frequency (cm^-1):

It is the number of wave crests that pass by a given point in one second frequency has units of hertz (Hz).

Stretch vibrations:

It is a vibration occurring along the line of the bond a stretching vibration changes the bond length.

Bending vibrations:

It is a vibration that does not occur along the line of the bond, bending vibration changes the bond angle.

Mass spectroscopy:

Interpreting a mass spectrum:

Each m/z values is the m/z value of one the fragments to the nearest whole number.

The peak with the highest m/z value in the molecular ions (M⁺), the fragment that results when the molecules lose electrons as result of being bombarding by the electron beam.

The m/z value of the molecular ion gives the molecular mass of the compound.

Peaks with smaller m/z values, fragment ion peak represent positively charged fragments of the molecular ion.

Base peak of mass spectrum:

The base peak is the one of highest (or) tallest peak, it has great abundance. It has the greatest relative abundance because it is generally the most stable positively charged fragment.

Given information:

The absorption value is at 1584, 1478, and 1446 cm^-1 and it has M⁺ = 114, 112 and 77.

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The table includes macrostates characterized by 4 energy levels (&) that are equally spaced but with different degrees of occupation. a) Calculate the energy of all the macrostates (in joules). See if they all have the same energy and number of particles. b) Calculate the macrostate that is most likely to exist. For this macrostate, show that the population of the levels is consistent with the Boltzmann distribution. macrostate 1 macrostate 2 macrostate 3 ε/k (K) Populations Populations Populations 300 5 3 4 200 7 9 8 100 15 17 16 0 33 31 32 DATO: k = 1,38×10-23 J K-1

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