Specific Heat Capacity of Substances | Cp and Cv | Heat Capacity| | Adiabatic Index|#Chemclasses-23
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Specific Heat Capacity of Substances | Cp and Cv | Heat Capacity| | Adiabatic Index|#Chemclasses-23
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Chem Classes
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Specific Heat Capacity of Substances
Specific heat capacity is the amount of heat required to raise the temperature of unit mass (1 kg) of a substance by 1 K (or 1°C).
Definition
The specific heat capacity of a substance is defined as:
The quantity of heat needed to increase the temperature of 1 kilogram of the substance by 1 kelvin (or 1°C).
Formula
Q=mcΔT
Where:
Q = heat supplied (J)
m = mass of the substance (kg)
c = specific heat capacity (J kg⁻¹ K⁻¹)
ΔT = change in temperature (K or °C)
From the formula:
c=mΔTQ
SI Unit
J kg⁻¹ K⁻¹ (joule per kilogram per kelvin)
Molar Specific heats at constant pressure and volume Cp and Cv
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