Chapter 1, Problem 1.34QP

(a)

Interpretation Introduction

To determine: The substance which has density of $1.25\text{g}/{\text{cm}}^3$ has intensive or extensive property.

Interpretation: The substance which has density of $1.25\text{g}/{\text{cm}}^3$ has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

Answer to Problem 1.34QP

The substance which has density of $1.25\text{g}/{\text{cm}}^3$ has an intensive property.

Explanation of Solution

The density of the substance remains same if the substance is cut into pieces or more substance is added because density of the substance does not depend upon the mass of the substance.

The property of substance which does not depend upon the mass of the substance is termed as intensive property. Therefore, the substance which has density of $1.25\text{g}/{\text{cm}}^3$ is an intensive property.

(b)

Interpretation Introduction

To determine: The substance which conducts electricity has intensive or extensive property.

Interpretation: The substance which conducts electricity has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

Answer to Problem 1.34QP

The substance which conducts electricity has an intensive property.

Explanation of Solution

The electrical conductivity of the substance depends upon the flow of electric charge occurring inside the substance. With the increase in the mass of the substance, the electrical conductivity remains same because there is no effect of mass on the electrical conductivity. Therefore, the substance which conducts electricity has an intensive property.

(c)

Interpretation Introduction

To determine: The substance which has water solubility of $0.379\text{g}$ in $10\text{mL}$ of water has intensive or extensive property.

Interpretation: The substance which has water solubility of $0.379\text{g}$ in $10\text{mL}$ of water has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

Answer to Problem 1.34QP

The substance which has water solubility of $0.379\text{g}$ in $10\text{mL}$ of water has an extensive property.

Explanation of Solution

The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

As the mass of substance is increased the solubility starts decreasing. Therefore, the substance which has water solubility of $0.379\text{g}$ in $10\text{mL}$ of water has an extensive property.

(d)

Interpretation Introduction

To determine: The material that sublimes at $-47°\text{C}$ has intensive or extensive property.

Interpretation: The material that sublimes at $-47°\text{C}$ has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive properties whereas those depend on mass are called extensive properties.

Answer to Problem 1.34QP

The material that sublimes at $-47°\text{C}$ has an intensive property.

Explanation of Solution

The property of substance which does not depend upon the mass of the substance is termed as intensive property. The temperature of substance does not depend upon the mass of substance because temperature affects each atom at same rate.

Therefore, the material that sublimes at $-47°\text{C}$ has an intensive property.

(e)

Interpretation Introduction

To determine: The solid that melts at $157°\text{C}$ has intensive or extensive property.

Interpretation: The solid that melts at $157°\text{C}$ has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

Answer to Problem 1.34QP

The solid that melts at $157°\text{C}$ has an intensive property.

Explanation of Solution

The property of substance which does not depend upon the mass of the substance is termed as intensive property.

The temperature of substance does not depend upon the mass of substance because temperature affects each atom at same rate. Therefore, the solid that melts at $157°\text{C}$ has an intensive property.

(f)

Interpretation Introduction

To determine: The sample that has mass of $6.77\text{g}$ has intensive or extensive property.

Interpretation: The sample that has mass of $6.77\text{g}$ has intensive or extensive property is to be predicted.

Concept introduction: The property of substance which does not depend upon the mass of the substance is termed as intensive property, whereas those that depend on mass are called extensive properties.

Answer to Problem 1.34QP

The sample that has mass of $6.77\text{g}$ has an extensive property.

Explanation of Solution

The property of substance which depends upon the mass of the substance is termed as extensive property. The mass of the given sample will change if more amount of the sample will be added.

Therefore, the sample that has mass of $6.77\text{g}$ has an extensive property.

Conclusion

1. a. The substance which has density of $1.25\text{g}/{\text{cm}}^3$ has an intensive property.
2. b. The substance which conducts electricity has an intensive property.
3. c. The substance which has water solubility of $0.379\text{g}$ in $10\text{mL}$ of water has an extensive property.
4. d. The material that sublimes at $-47°\text{C}$ has an intensive property.
5. e. The solid that melts at $157°\text{C}$ has an intensive property.
6. f. The sample that has mass of $6.77\text{g}$ has an extensive property.