Heat Capacity
| Formula / Notation | C_p = q/(mΔT) (at constant P); C_v = q/(mΔT) (at constant V) |
|---|---|
| Also Known As | Cp, Cv, specific heat, molar heat capacity, thermal capacity |
What is Heat Capacity?
The amount of heat energy required to raise the temperature of a substance by 1°C (or 1 K). Specific heat capacity is per unit mass (J/g·°C). Molar heat capacity is per mole. Water has an unusually high specific heat capacity (4.18 J/g·°C), making it an excellent thermal regulator.
Formula & Notation
Other Names / Synonyms: Cp, Cv, specific heat, molar heat capacity, thermal capacity
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The amount of heat energy required to raise the temperature of a substance by 1°C (or 1 K). Specific heat capacity is per unit mass (J/g·°C). Molar heat capacity is per mole. Water has an unusually high specific heat capacity (4.18 J/g·°C), making it an excellent thermal regulator.
Heat capacity data is used in: reactor thermal design (calculating temperature rises in exothermic reactions), calorimetry, thermodynamic calculations (ΔH via Kirchhoff's law), climate science (ocean heat capacity buffers temperature changes), and materials selection for thermal engineering applicat…
High heat capacity of water and aqueous solutions means large energy is required to heat them — important in designing heating systems. Materials with low heat capacity (metals) can undergo rapid temperature rises from exothermic reactions, potentially triggering ignition.
The formula or notation for Heat Capacity is: C_p = q/(mΔT) (at constant P); C_v = q/(mΔT) (at constant V)