The $IUPAC$ name of $\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_2} - CHO} \\
{\,\,\,\,\,\,\,\,\,\,|} \\
{OHC - C{H_2} - C{H_2} - CH - C{H_2} - CHO}
\end{array}$ is :
→The lattice energy of $NaCl$ is $-780\, kJ\, mol^{-1}$. The enthalpies of hydration of $Na_{\left( g \right)}^ + $ and $Cl_{\left( g \right)}^ - $ ions are $-406\, kJ\, mol^{-1}$ and $-364\, kJ\, mol^{-1}$. The enthalpy of solution of $NaCl_{(s)}$ is.....$kJ\, mol\,^{-1}$
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