Heat of Fusion Calculator

To calculate the heat of fusion, divide the heat energy (q) required to change a substance’s phase by its mass (
m). The Heat of Fusion Calculator is a valuable tool for determining the heat required to melt a solid or freeze a liquid without changing its temperature.

Heat of Fusion Calculator

Enter any 2 values to calculate the missing variable

Total Heat Used to Melt Solid:

J kJ MJ BTU

Mass:

kg g lb

Heat of Fusion:

J/g kJ/kg BTU/lb

Calculate Reset

 

This property, known as the latent heat of fusion, is widely used in physics and chemistry to understand phase transitions, such as melting ice or solidifying water. The heat of fusion is essential in calculating energy requirements for thermal processes in various scientific and industrial applications.

Formula:

$H_f = \frac{q}{m}$

Variables:

Variable	Description	Unit
$H_f$	Heat of fusion	Joules per gram (J/g) or other units
$q$	Heat energy	Joules (J)
$m$	Mass of the substance	Grams (g)

Solved Calculations:

Example 1: Calculate Heat of Fusion ($q = 334,000 \, \text{J}, m = 1000 \, \text{g}$)

Step	Value	Explanation
Heat energy ($q$)	$334,000 \, \text{J}$	Given
Mass ($m$)	$1000 \, \text{g}$	Given
Calculation	$H_f = \frac{334,000}{1000}$	Plug into formula
Simplification	$H_f = 334$	Simplify terms
Result	$H_f = 334 \, \text{J/g}$	Heat of fusion

 

Example 2: Calculate Heat Energy ($H_f = 334 \, \text{J/g}, m = 500 \, \text{g}$)

Step	Value	Explanation
Heat of Fusion ($H_f$)	$334 \, \text{J/g}$	Given
Mass ($m$)	$500 \, \text{g}$	Given
Calculation	$q = 334 \cdot 500$	Rearrange formula
Simplification	$q = 167,000$	Simplify terms
Result	$q = 167,000 \, \text{J}$	Heat energy required

What is the Heat of Fusion Calculator?

The Heat of Fusion Calculator is a practical tool for determining the energy required to change a substance from solid to liquid or vice versa without altering its temperature.

This process, known as the heat of fusion, is a fundamental concept in physics and chemistry, particularly in thermal energy calculations and phase changes.

To use the calculator, you typically input values such as the mass of the substance, its specific latent heat of fusion, and sometimes the amount of substance in moles for molar heat of fusion calculations.

For instance, it can estimate the energy needed to melt ice into water or calculate the energy released when water freezes.

This tool is ideal for solving problems related to specific latent heat calculations, chemistry experiments, or physics class assignments. It can also assist in real-world applications like determining the thermal energy requirements in industrial processes involving phase transitions, such as melting metals or freezing water.

Final Words:

In summary, the Heat of Fusion Calculator is a valuable resource for students, educators, and professionals. It simplifies complex calculations, enabling users to accurately estimate the energy involved in phase changes for various substances.