The enthalpy change during the cooling of water from 50.0 ° C to ice at 0.0 ° C .

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Answer 1

Question

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

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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 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Expert Solution & Answer

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Answer 3

Question

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Expert Solution & Answer

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See solution

Answer 5

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Answer 6

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Answer 7

Chapter 11.4, Problem 11.3.2PE

Step 1:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

Answer 8

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Answer 9

Step 2:

Interpretation Introduction

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

Answer 10

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Answer 11

Step 3:

Interpretation Introduction

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

Answer 12

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Answer 13

Step 4:

Interpretation Introduction

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

Ch. 11.2 - Which of the following substances is most likely...Ch. 11.2 - Prob. 11.1.2PE Ch. 11.3 - Prob. 11.2.1PE Ch. 11.3 - Prob. 11.2.2PE Ch. 11.4 - What information about water is needed to...Ch. 11.4 - Prob. 11.3.2PE Ch. 11.5 - In the mountains, water in an open container will...Ch. 11.5 - Prob. 11.4.2PE Ch. 11.6 - Prob. 11.5.1PE Ch. 11.6 - Prob. 11.5.2PE

The enthalpy change during the cooling of water from 50.0 ° C to ice at 0.0 ° C .

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To determine: The enthalpy change during the cooling of water from 50.0 °C to ice at 0.0 °C .

To determine: The enthalpy change during the cooling of water from 0 °C to ice at 0.0 °C .

To determine: The enthalpy change during the conversion of ice from 0.0 °C to ice at −30.0 °C .

To determine: The enthalpy change for the given process, " 100.0 g water at 50.0 °C is cooled to ice at −30.0 °C ".

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