Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
8th Edition
ISBN: 9780134421377
Author: Charles H Corwin
Publisher: PEARSON
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Chapter 11, Problem 59E
Interpretation Introduction

(a)

Interpretation:

Whether the melting point increase or decrease with the increase in the molar mass of Group VIA/16 hydrogen compounds is to be stated.

Concept introduction:

The melting point of a compound is the temperature at which solid converts into liquid form. Melting point depends upon the intermolecular forces of attraction between the molecules and is also directly proportional to the molar mass of the compound.

Expert Solution
Check Mark

Answer to Problem 59E

The melting point generally increases with the increase in the molar mass of Group VIA/16 hydrogen compounds.

Explanation of Solution

The melting point of the hydrogen compounds of Group VIA/16 increases with the increase in the molar mass of compounds. This is because with the increase in the molar mass molecular size also increases due to which interaction increases. The H2O being the lowest mass hydrogen compound of Group VIA/16 elements still has the highest melting point among all due to strong intermolecular forces of attraction.

The order of melting point of hydrogen compounds of Group VIA/16 is given below.

H2O>H2Te>H2Se>H2S

Conclusion

The melting point increases with increase in the molar mass of Group VIA/16 hydrogen compounds.

Interpretation Introduction

(b)

Interpretation:

Whether the boiling point increases or decreases with the increase in the molar mass of Group VIA/16 hydrogen compounds is to be stated.

Concept introduction:

The boiling point is the temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure. The boiling point of a compound is directly proportional to its intermolecular forces of attractions and the molar mass of the compound.

Expert Solution
Check Mark

Answer to Problem 59E

The boiling point generally increases with the increase in the molar mass of Group VIA/16 hydrogen compounds.

Explanation of Solution

The boiling point of the hydrogen compounds of Group VIA/16 increases with the increases in the molar mass of compounds. This is because with the increase in the molar mass molecular size also increases due to which interaction increases. The H2O being the lowest mass hydrogen compound of Group VIA/16 elements still has the highest boiling point among all due to strong intermolecular forces of attraction.

The order of boiling point of hydrogen compounds of Group VIA/16 is given below.

H2O>H2Te>H2Se>H2S

Conclusion

The boiling point increases with increase in the molar mass of Group VIA/16 hydrogen compounds.

Interpretation Introduction

(c)

Interpretation:

Whether the heat of fusion increases or decreases with the increase in the molar mass of Group VIA/16 hydrogen compounds is to be stated.

Concept introduction:

The heat of fusion of a compound is the amount of energy required to convert solid into liquid form. The heat of fusion depends upon the intermolecular forces of attraction between the molecules and is also directly proportional to the molar mass of the compound.

Expert Solution
Check Mark

Answer to Problem 59E

The heat of fusion generally increases with the increase in the molar mass of Group VIA/16 hydrogen compounds.

Explanation of Solution

The heat of fusion of the hydrogen compounds of Group VIA/16 increases with the increases in the molar mass of compounds. This is because with the increase in the molar mass molecular size also increases due to which interaction increases. The H2O being the lowest mass hydrogen compound of Group VIA/16 elements still has the highest heat of fusion among all due to strong intermolecular forces of attraction.

The order of heat of fusion of hydrogen compounds of Group VIA/16 is given below.

H2O>H2Te>H2Se>H2S

Conclusion

The heat of fusion increases with increase in the molar mass of Group VIA/16 hydrogen compounds.

Interpretation Introduction

(d)

Interpretation:

Whether the heat of vaporization increases or decreases with the increase in the molar mass of Group VIA/16 hydrogen compounds is to be stated.

Concept introduction:

The heat of vaporization is the amount of heat required to convert the liquid state to the gaseous state. The heat of vaporization of a compound is directly proportional to its intermolecular forces of attractions and the molar mass of the compound.

Expert Solution
Check Mark

Answer to Problem 59E

The heat of vaporization generally increases with the increase in the molar mass of Group VIA/16 hydrogen compounds.

Explanation of Solution

The heat of vaporization of the hydrogen compounds of Group VIA/16 increases with the increases in the molar mass of compounds. This is because with the increase in the molar mass molecular size also increases due to which interaction increases. The H2O being the lowest mass hydrogen compound of Group VIA/16 elements still has the highest heat of vaporization among all due to strong intermolecular forces of attraction.

The order of heat of vaporization of hydrogen compounds of Group VIA/16 is given below.

H2O>H2Te>H2Se>H2S

Conclusion

The heat of vaporization increases with the increase in the molar mass of Group VIA/16 hydrogen compounds.

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Chapter 11 Solutions

Introductory Chemistry: Concepts and Critical Thinking (8th Edition)

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