What is Molar Heat Capacity?
The Molar Heat Capacity is just like the specific heat capacity in Chemistry, except its units differ. A specific heat capacity is the amount of energy necessary to increase the temperature of a kilogram of that substance by one Kelvin. Molar heat capacity is the amount of energy necessary to raise one mole of substance by one degree Kelvin. One mole of a substance is exactly 6.02×1023 atoms or molecules of that substance. If we know how many kilograms we have of a substance, and we also know the atomic weight of that substance, we can find out how many moles we have of the substance. We can therefore convert the specific heat capacity of a kilogram of a substance to the molar heat capacity in the following way: Cn = Cp*mmole where Cn is the molar heat capacity of the substance, Cp is the specific heat, and mmole is the mass per mole of the substance, which is essentially the atomic weight (measured in g/mol). The SI units for molar heat capacity are joules/(mole.Kelvin). The equation
