\(\Delta \mathrm{U}=2.1 \mathrm{Kcal}, \Delta \mathrm{S}=20 \mathrm{cal} \mathrm{K}^{-1}\) at \(300 \mathrm{K}\)
\(\Delta \mathrm{H}=\Delta \mathrm{U}+\Delta \mathrm{n}_{\mathrm{g}} \mathrm{RT}\)
\(\Delta \mathrm{G}=\Delta \mathrm{H}-\mathrm{T} \Delta \mathrm{S}\)
\(\Delta \mathrm{G}=\Delta \mathrm{U}+\Delta \mathrm{n}_{\mathrm{g}} \mathrm{RT}-\mathrm{T} \Delta \mathrm{S}\)
\(=2.1+\frac{2 \times 2 \times 300}{1000}-\frac{300 \times 20}{1000}\)
\(\left(\mathrm{R}=2 \mathrm{cal} \mathrm{K}^{-1} \mathrm{mol}^{-1}\right)\)
\(=2.1+1.2-6=-2.70 \mathrm{Kcal} / \mathrm{mol}\)
કોલમ$-I$ |
કોલમ$-II$ |
$(A)\;CO_2(s)\;\to\;CO_2(g)$ |
$(p)$ સંક્રાંતિ માધ્યમ |
$(B)\;CaCO_3(s)\;to\;CaO(s)$ $+ CO_2(g)$ |
$(q)$ અપરરૂપ ફેરફાર |
$(C)\;2H^{\cdot}\;\to\;H_2(g)$ |
$(r)\;\Delta\, H \,\frac{1}{2}$ ધન છે. |
$(D)\;P$ (સફેદ ધન) $\to\;P$( વાવ ધન) |
$(s)\;\Delta\,S \,\frac{1}{2}$ ધન છે. |
|
$(t)\;\Delta\, S$ ઋણ છે. |