Thermodynamics and Thermochemistry
22.0 Third Law of Thermodynamic
22.1 Third Law of Thermodynamics, Entropy ? Temperature
22.2 Limitations of Third Law of Thermodynamics
22.0 Third Law of Thermodynamic
22.2 Limitations of Third Law of Thermodynamics
At absolute zero temperature the entropy becomes zero in the case of perfectly crystalline substance”.
Formula to evaluate $?G$
$$\Delta G = 2.303\;nRT\;\log \frac{{{P_2}}}{{{P_1}}}$$
$$\Delta G = 2.303\;nRT\;\log \frac{{{V_1}}}{{{V_2}}}$$
Composite equation representing first and second law of thermodynamics
$$\Delta E = q + W\quad \quad \quad \because \quad \quad \Delta S = \frac{q}{T}$$
$$\therefore \;\;\Delta E = T\Delta S + W\quad \therefore \quad \quad W = P\Delta V$$
or $$\Delta E = T\Delta S - P\Delta V$$
