4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

$HC \equiv CH\,\xrightarrow[{H{g^{2 + }}}]{{{H_2}S{O_4}}}\,'P'$

Product $'P'$ will not give

$\Delta_{f} \mathrm{H}^{\ominus}$ for $\mathrm{KCl}=-436.7 \,\mathrm{~kJ}\, \mathrm{~mol}^{-1}$

$\Delta_{\text {sub }} \mathrm{H}^{\ominus}$ for $\mathrm{K}=89.2 \,\mathrm{~kJ}\, \mathrm{~mol}^{-1}$

$\Delta_{\text {ionization }} \,\mathrm{H}^{-}$ for $\mathrm{K}=419.0\, \mathrm{~kJ}\, \mathrm{~mol}^{-1}$

$\Delta_{\text {electron gain }} \mathrm{H}^{\ominus}$ for $\mathrm{Cl}_{(\text {e) }}=-348.6 \,\mathrm{~kJ} \,\mathrm{~mol}^{-1}$

$\Delta_{\mathrm{bond}} \mathrm{H}^{-}$ for $\mathrm{Cl}_{2}=243.0 \,\mathrm{~kJ} \,\mathrm{~mol}^{-1}$

The magnitude of lattice enthalpy of $\mathrm{KCl}$ in $\mathrm{kJ} \mathrm{mol}^{-1}$ is ..... . (Nearest integer)