MCQ
Among the given compounds, the correct dehydration order is :
- ✓$I < II < III < IV$
- B$II < III < IV < I$
- C$I < III < IV < II$
- D$I < II < III = IV$
Phenyl carbocations are least stable, so the order is $I\, <\, II\, < \,III \,<\, IV$.
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$kJ\,mol ^{-1}$ (Nearest integer)
Given : $\Delta_{ dis } H _{ Cl _{2(g)}}^{\circ}=240\,kJ\,mol ^{-1}$.
$\Delta_{ eg } H _{ Cl _{(g)}}^{\circ}=-350\,kJ\,mol ^{-1}$,
$\Delta_{ hyd } H _{ Cl i _{( j )}^{\circ}}^{\circ}=-380\,kJ\,mol ^{-1}$