Chemistry - Thermodynamics - II Question with Solution | TestHub

The third law helps to calculate the absolute entropies of pure substances at different temperature. The entropy of the substance at different temperature. $\mathrm{T}$ may be calculated by the measurement of heat capacity change $$\begin{array}{l}{\mathrm{S}}_{\mathrm{T}}-{\mathrm{S}}_0=\Delta \mathrm{S}={\int }_0^{\mathrm{T}}\frac{{\mathrm{C}}_{\mathrm{p}}\mathrm{dt}}{\mathrm{T}}\\ \text{ Where }{\mathrm{S}}_{\mathrm{T}}=\text{ Entropy at }\mathrm{TK}\end{array}$$ ${\mathrm{S}}_0=$ Entropy at $0\mathrm{K}$ $$\begin{array}{l}={\mathrm{C}}_{\mathrm{p}}\cdot {\log }_e\mathrm{T}\\ =2.303{\mathrm{C}}_{\mathrm{p}}\log \mathrm{T}\end{array}$$