Calorimetry Calculator
Calculate heat energy transfer (Q) using mass, specific heat capacity, and temperature change.
Calculation Parameters
Specify your stoichiometry inputs.
Calculated Result
Heat Transferred (Q)
Expert Tip
A positive Q indicates heat energy is absorbed (endothermic), while a negative Q indicates heat is released (exothermic).
How this Calculator Works
This calculator computes the heat energy (Q) exchanged during a temperature change. Adjust the sliders below:
- Mass (m): The mass of the substance in grams (Default: 100 g)
- Specific Heat (c): The specific heat capacity in J/g·°C (Default: 4.18 J/g·°C)
- Initial Temp (Ti): Starting temperature in °C (Default: 20 °C)
- Final Temp (Tf): Ending temperature in °C (Default: 30 °C)
The results are computed instantly and updated in the results panel on the right.
Formula & Methodology
Where:
- Q: Heat energy transferred (Joules).
- m: Mass of substance (grams).
- c: Specific heat capacity (J/g·°C).
- Tf: Final temperature (°C).
- Ti: Initial temperature (°C).
Step-by-Step Calculation Example
To calculate heat energy transfer manually using the default inputs, follow these steps:
- Identify the input parameters. For example:
- Mass (m) = 100 g
- Specific Heat (c) = 4.18 J/g·°C
- Ti = 20 °C, Tf = 30 °C
- Apply the formula:
Q = 100 * 4.18 * (30 - 20) Q = 418 * 10 = 4180 Joules
- Verify the calculated value which is updated instantly in the results panel on the right.
Frequently Asked Questions
What is the heat transfer formula in calorimetry? ▼
q = m × c × ΔT, where q is heat energy (J), m is mass (g), c is specific heat capacity (J/(g·°C)), and ΔT is temperature change (°C).
What is the First Law of Thermodynamics in calorimetry? ▼
Heat lost by the hotter substance equals heat gained by the cooler substance in an isolated calorimeter: q_lost + q_gained = 0.
What is a bomb calorimeter used for? ▼
A bomb calorimeter measures heat of combustion at constant volume for chemical reactions and food caloric content.