What will be the enthalpy of formation of toluene considering the data given?
Bond energies of $\mathrm{C}-\mathrm{C}=79\mathrm{kcal},\mathrm{C}=\mathrm{C}=135\mathrm{kcal},$ $\mathrm{C}-\mathrm{H}=102\mathrm{kcal},$ heat of atomisation of $\mathrm{C}=156.8\mathrm{kcal}$ and heat of atomisation of $\mathrm{H}=49.5\mathrm{kcal}$

What will be the molar entropy change when silver is heated from $227°\mathrm{C}$ to $727°\mathrm{C}$ ?

Consider the molar specific heat of $\mathrm{Ag},{\mathrm{C}}_{\mathrm{p}}=5.3+0.0028 \mathrm{T}$

What will be the $\Delta \mathrm{H}°$ and $\Delta \mathrm{S}°$ values for the given cell having $\text{E°}$ at $20°\mathrm{C}$ and $30°\mathrm{C}$ to be $0.18 \mathrm{V}$ and $0.28 \mathrm{V}$ respectively?

The cell: (Pt) ${\mathrm{H}}_2/{\mathrm{H}}^{+}//\mathrm{KCl}/{\mathrm{Hg}}_2{\mathrm{Cl}}_2/\mathrm{Hg}$ (Given: $1 \mathrm{F}=96500$ Coulombs)