# HOW TO CALCULATE HEAT CAPACITY

Heat capacity is the amount of heat that is to be added to 1 mole of substance to increase its temperature by 1 degree Kelvin. The same can be expressed in terms of mass as the heat that is to be added to 1 gram of substance to increase its temperature by 1 degree Kelvin. The former has the units J/mol.K and the latter J/g.K. Heat capacity can be calculated in the following the calculation tables.

Heat capacity is dependent on the temperature i.e for the same substance the heat capacity is different at different temperature. In order to find this value, heat capacity is expressed as function of temperature(T) which is usually valid over a given range of temperature. These equations of heat capacities have various forms and are provided in the literature.

In the following calculation sheet, we have considered three common equations for computing heat capacity. The constants in the equations are to obtained from textbooks, literature etc. An example calculation for each type of equation is carried out. You can enter the constants directly and get heat capacity values in J/mol K and J/g.K .

Equation type 1 : Cp = A + BT – CT-2

Equation Type 2 : Cp/R = A + BT + CT2 + DT-2

Equation Type 3 : Cp = C1 + C2T + C3T2 + C4T3 + C5T4

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