\(A\xleftarrow{{ - 40}}B\)
\(\Delta H = 40 - 40 = 0\).
$(I)\, q + W \,\,(II)\, q \,\,(III) \,W \,\,(IV)\, H - TS$
$H - H$ બંધઊર્જા | $:\, 431.37 \,kJ\, mol^{-1}$ |
$C= C$ બંધઊર્જા | $:\, 606.10\, kJ \,mol^{-1}$ |
$C - C$ બંધઊર્જા | $:\, 336.49\, kJ\, mol^{-1}$ |
$C - H$ બંધઊર્જા | $:\, 410.50\, kJ\, mol^{-1}$ |
પ્રક્રિયા : $\begin{array}{*{20}{c}}
{H\,\,\,\,H} \\
{|\,\,\,\,\,\,\,\,|} \\
{C = C} \\
{|\,\,\,\,\,\,\,\,\,|} \\
{H\,\,\,\,H}
\end{array}\, + \,H - H\, \to \,\begin{array}{*{20}{c}}
{H\,\,\,\,H} \\
{|\,\,\,\,\,\,\,\,|} \\
{H - C - C - H} \\
{|\,\,\,\,\,\,\,\,\,|} \\
{H\,\,\,\,H}
\end{array}\,$