\(\therefore\) calculated enthaly of hydrogenation of benzene \(=3 \times(-119)\)
\(=-357 \mathrm{kJ} / \mathrm{mol}\)
Resonance energy of benzene \(=\Delta \mathrm{H}_{\mathrm{Exp}}-\Delta \mathrm{H}_{\mathrm{cal}}\)
\({-150=-357-\Delta \mathrm{H_{cal}}}\)
\({\Delta \mathrm{H}_{\mathrm{cal}}=-207 \;\mathrm{kJ} / \mathrm{mol}}\)
Enthalpy of hydrogenation of benzene \(=-207\; \mathrm{kJ} / \mathrm{mol}\)
$Pt ( s )\left| H _{2}( g )\right| H ^{+}( aq ) \| Ag ^{+}( aq ) \mid Ag ( s )$
$E _{\text {Cell }}^{0}=+0.5332 \,V$.
$\Delta_{ f } G ^{0}$ નું મૂલ્ય..........$k\,J\, mol ^{-1}$ છે. (નજીકનો પૂર્ણાંક)
[ઉપયોગ : $\left.{R}=8.3 \,{~J} \,{~mol}^{-1}\, {~K}^{-1}\right]$