The molality of solution should be calculated. Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent. It is mathematically represented as follows: m = n ( solute ) M ( solvent,kg ) Here, n is number of moles of solute and M is mass of solvent. From the mass, number of moles can be calculated as follows: n = m M Here, m is mass and M is molar mass.

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Answer 1

Question

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

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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 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

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Check out a sample textbook solution

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Answer 3

Question

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Expert Solution & Answer

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Answer 4

Question

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Answer 6

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Answer 7

Chapter 12.7, Problem 72PP

(a)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction:The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Answer 8

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Answer 9

( b)

Interpretation Introduction

Interpretation: The molality of solution should be calculated.

Concept Introduction: The molality of solution is defined as number of moles of solute in 1 kg of solvent.

It is mathematically represented as follows:

m=n(solute)M(solvent,kg)

Here, n is number of moles of solute and M is mass of solvent.

From the mass, number of moles can be calculated as follows:

n=mM

Here, m is mass and M is molar mass.

Answer 10

Expert Solution & Answer

Answer 11

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Answer 12

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Answer 13

Ch. 12.1 - Identify the solute and the solvent in each...Ch. 12.1 - Identify the solute and the solvent in each...Ch. 12.1 - Describe the formation of an aqueous KI solution,...Ch. 12.1 - Prob. 4PP Ch. 12.1 - Water is a polar solvent and carbon tetrachloride...Ch. 12.1 - Water is a polar solvent and hexane (C6H14) is a...Ch. 12.2 - KF is a strong electrolyte, and HF is a weak...Ch. 12.2 - Prob. 8PP Ch. 12.2 - Prob. 9PP Ch. 12.2 - Prob. 10PP

Solution Summary: The author explains that molality of solution is defined as number of moles of solute in 1 kg of solvent.

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