MCQ
Identify the species $X$ in the reaction :${\rm{Propene }} + O\,{\rm{ (conc}}{\rm{. acidic\, }}KMn{O_4}) \to X + {\rm{Formic\, acid}}$
- AAcetone
- BAcetaldehyde
- CIsopropanol
- ✓Acetic acid
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$\Delta H_{f({C_2}{H_2})(g)}^o\, = \,230\,kJ\,mo{l^{ - 1}}$
$\Delta H_{f({C_6}{H_6})(g)}^o\, = \,85\,kJ\,mo{l^{ - 1}}$
Calculate the standard heat of trimerisation of ethyne to benzene.
$3{C_2}{H_2}(g) \to {C_6}{H_6}(g)$
......$kJ\, mol^{-1}$
($A$) tetranuclear $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ unit
($B$) all boron atoms in the same plane
($C$) equal number of $s p^2$ and $s p^3$ hybridized boron atoms
($D$) one terminal hydroxide per boron atom