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The molar heat capacity of a chemical substance is the amount of energy that must be added, in the form of heat, to one mole of the substance in order to cause an increase of one unit in its temperature.
19 Οκτ 2023 · Molar heat capacity is the amount of heat required to raise the temperature of 1 mole of a substance by 1 unit & is calculated by dividing heat capacity by the total number of moles.
13 Μαΐ 2023 · The molar heat capacity (C p) is the amount of energy needed to increase the temperature of 1 mol of a substance by 1°C; the units of C p are thus J/(mol•°C). The subscript p indicates that the value was measured at constant pressure.
10 Οκτ 2018 · Molar heat capacity or molar specific heat capacity is the amount of heat energy required to raise the temperature of 1 mole of a substance. In SI units, molar heat capacity (symbol: c n) is the amount of heat in joules required to raise 1 mole of a substance 1 Kelvin. c n = Q/ΔT.
Statistical mechanics provides a relatively simple expression for the constant volume molar heat capacity (\(C_{V,m}\)) of a one-dimensional harmonic oscillator \[ C_{V,m}^{1-D} = R \left( \dfrac{\Theta_v }{T} \right)^2 \left( \dfrac{e^{-\Theta_v/2T} }{1- e^{-\Theta_v/T}} \right) ^2 \label{1}\]
The SI unit for heat capacity of an object is joule per kelvin (J/K or J⋅K −1). Since an increment of temperature of one degree Celsius is the same as an increment of one kelvin, that is the same unit as J/°C.
Molar heat capacity is defined as the amount of heat required to raise 1 mole of a substance by 1 degree Kelvin. Molar heat capacity is very similar to specific heat capacity but measures per mole instead of per gram of substance.
