Enter the known values into the calculator to determine the missing variable.
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Enthalpy To Temperature Formula
The following equation is used to relate enthalpy, heat capacity, and temperature change.
H = C * ΔT
- Where H is the enthalpy (J)
- C is the heat capacity (J/°C)
- ΔT is the temperature change (°C)
To calculate the temperature change, divide the enthalpy by the heat capacity.
| Enthalpy (J) | Temperature Change (°C) |
|---|---|
| 100 | 0.024 |
| 250 | 0.060 |
| 500 | 0.120 |
| 750 | 0.179 |
| 1,000 | 0.239 |
| 1,500 | 0.359 |
| 2,000 | 0.478 |
| 2,500 | 0.598 |
| 3,000 | 0.717 |
| 4,000 | 0.956 |
| 5,000 | 1.195 |
| 7,500 | 1.793 |
| 10,000 | 2.390 |
| 15,000 | 3.585 |
| 20,000 | 4.780 |
| 25,000 | 5.975 |
| 30,000 | 7.170 |
| 40,000 | 9.560 |
| 50,000 | 11.950 |
| 100,000 | 23.901 |
| Assumes constant heat capacity C = 4184 J/°C (≈ 1 kg of water, cp ≈ 4.184 J/g·°C). Formula: ΔT = Q / C. | |
What is Enthalpy To Temperature?
Definition:
The enthalpy to temperature conversion represents the relationship between the energy content of a system and the resultant temperature change when heat is applied. It is a fundamental concept in thermodynamics.
How to Calculate Enthalpy To Temperature?
Example Problem:
The following example outlines the steps and information needed to calculate the missing variable.
First, determine the enthalpy. In this example, the enthalpy is 5000 J.
Next, determine the heat capacity. In this example, the heat capacity is 100 J/°C.
Finally, calculate the temperature change using the formula above:
ΔT = H / C
ΔT = 5000 / 100
ΔT = 50°C
FAQ
What does enthalpy represent in a thermodynamic process?
Enthalpy represents the total heat content of a system, including both the energy required to create the system and the energy needed to displace its surroundings.
How is heat capacity related to temperature change?
Heat capacity measures the amount of heat required to raise the temperature of a substance by one degree Celsius, and it directly influences the temperature change experienced when heat is added or removed.
Why should one field be left empty in the calculator?
Leaving one field empty allows the calculator to rearrange the equation and determine the missing variable—whether it be enthalpy, heat capacity, or temperature change—based on the values provided.