Chapter 10.7, Problem 10.45QAP

Interpretation Introduction

(a)

Interpretation:

Interpret the heat change in joules to melt 65 g of ice.

Concept Introduction:

Heat for changing the state of water from ice can be determined as:

  ${\text{Q}}_{\text{1}}\text{= m s dT}$

Heat required for changing the state of ice from solid to liquid.

  ${\text{Q}}_{\text{2}}\text{= m L}$

Where, m is mass of ice or water

S is specific heat of water

dT is the change in temperature

Interpretation Introduction

(b)

Interpretation:

Interpret the heat change in joules to melt 17 g of benzene.

Concept Introduction:

Heat for changing the state of water from ice can be determined as:

  ${\text{Q}}_{\text{1}}\text{= m s dT}$

Heat required for changing the state of ice from solid to liquid.

  ${\text{Q}}_{\text{2}}\text{= m L}$

Where, m is mass of ice or water

S is specific heat of water

dT is the change in temperature

Interpretation Introduction

(c)

Interpretation:

Interpret the heat change in kJ to freeze 225 g of acetone.

Concept Introduction:

Heat for changing the state of water from ice can be determined as:

  ${\text{Q}}_{\text{1}}\text{= m s dT}$

Heat required for changing the state of ice from solid to liquid.

  ${\text{Q}}_{\text{2}}\text{= m L}$

Where, m is mass of ice or water

S is specific heat of water

dT is the change in temperature

Interpretation Introduction

(d)

Interpretation:

Interpret the heat change in kJ to freeze 0.05 kg of water.

Concept Introduction:

Heat for changing the state of water from ice can be determined as:

  ${\text{Q}}_{\text{1}}\text{= m s dT}$

Heat required for changing the state of ice from solid to liquid.

  ${\text{Q}}_{\text{2}}\text{= m L}$

Where, m is mass of ice or water

S is specific heat of water

dT is the change in temperature