Question

Can we define specific heat capacity at constant temperature?

Answer 1

Specific heat capacity, $s=\frac{\mathrm{\Delta }Q}{m\mathrm{\Delta }T}$, where $\Delta$Q/m is the heat supplied per unit mass of the substance and $\mathrm{\Delta }$T is the change in temperature produced. At constant temperature, ​$\mathrm{\Delta }$T = 0; therefore, s = infinity. So, we cannot define specific heat capacity at constant temperature.