(a) Interpretation: The acid-base reaction that occurs when CH 3 CH 2 NH 2 dissolves in water should be written. Concept Introduction: Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

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Answer 1

Question

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

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(a 4 shows scanning electron microscope (SEM) images of extruded actions of packing bed for two capillary columns of different diameters, al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the same stationary phase, spherical particles with 1-um diameter. A) When the columns were prepared, the figure shows that the column with the larger diameter has more packing irregularities. Explain this observation. B) Predict what affect this should have on band broadening and discuss your prediction using the van Deemter terms. C) Does this figure support your explanations in application question 33? Explain why or why not and make any changes in your answers in light of this figure. Figure 4 SEM images of sections of packed columns for a) 750 and b) 30-um-i.d. capillary columns.³

fcrip = ↓ bandwidth Il temp 32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual components of the van Deemter equation and consequently, band broadening? Increase temperature Longer column Using a gas mobile phase instead of liquid Smaller particle stationary phase Multiple Paths Diffusion Mass Transfer

34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.). A) Predict whether decreasing the column inner diameters increase or decrease bandwidth. B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or decreasing bandwidth as a function of i.d. and justify your answer. Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles. 35 20 H(um) 큰 20 15 90 0+ 1500 100 75 550 01 02 594 05 μ(cm/sec) 30 15 10

Answer 2

Question

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

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Answer 3

Question

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

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Answer 4

Question

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

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Answer 5

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 6

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 7

Chapter 18, Problem 51P

Interpretation Introduction

(a)

Interpretation:

The acid-base reaction that occurs when CH₃CH₂NH₂ dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₂NH dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The acid-base reaction that occurs when (CH₃CH₂)₃N dissolves in water should be written.

Concept Introduction:

Since amines have a lone pair of electrons on its N atom, they act as proton acceptors. When amines dissolve in water, amine accepts protons from water and forms its conjugate acid. Amines are basic than other organic compounds but are weaker bases than inorganic bases.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 18.1 - Prob. 18.1PP Ch. 18.1 - Prob. 18.1P Ch. 18.1 - Prob. 18.2P Ch. 18.1 - Prob. 18.3P Ch. 18.2 - Prob. 18.2PP Ch. 18.2 - Prob. 18.4P Ch. 18.2 - Prob. 18.5P Ch. 18.3 - Prob. 18.3PP Ch. 18.4 - Decaffeinated coffee is produced by extracting the...Ch. 18.4 - Prob. 18.7P

Solution Summary: The author explains that amines have a lone pair of electrons on its N atom, and act as proton acceptors.

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Chapter 18 Solutions