Vernier Software and Technology - Celebrating 35 years
Vernier Software & Technology

Heat of Fusion of Ice

Figure from experiment 4 from Chemistry with Vernier

Introduction

Melting and freezing behavior are among the characteristic properties that give a pure substance its unique identity. As energy is added, pure solid water (ice) at 0°C changes to liquid water at 0°C.

In this experiment, you will determine the energy (in joules) required to melt one gram of ice. You will then determine the molar heat of fusion for ice (in kJ/mol). Excess ice will be added to warm water, at a known temperature, in a Styrofoam cup. The warm water will be cooled down to a temperature near 0°C by the ice. The energy required to melt the ice is removed from the warm water as it cools.

To calculate the heat that flows from the water, you can use the relationship

q = {C_p} \cdot m \cdot \Delta t

where q stands for heat flow, Cp is specific heat, m is mass in grams, and Δt is the change in temperature. For water, Cp is 4.18 J/g°C.

Objectives

In this experiment, you will

  • Determine the energy (in Joules) required to melt one gram of ice.
  • Determine the molar heat of fusion for ice (in kJ/mol).

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Option 1

Option 2

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Chemistry with Vernier »

Experiment 4 from Chemistry with Vernier Lab Book

<em>Chemistry with Vernier</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

Buy the Book

Go to top