Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(I)$ $2HI(g) \rightleftharpoons {H_2}(g)\, + \,{I_2}(g)$
$(II)$ $2N{H_3}(g) \rightleftharpoons {N_2}(g)\, + \,3{H_2}(g)$
$(III)$ $2NO(g) \rightleftharpoons {N_2}(g)\, + \,{O_2}(g)$
$(IV)$ $PC{l_5}(g) \rightleftharpoons PC{l_3}(g)\, + \,C{l_2}(g)$
$CH _{3} OH (1)+\frac{3}{2} O _{2}( g ) \rightarrow CO _{2}( g )+2 H _{2} O (1)$
the amount of heat produced as measured by bomb calorimeter is $726 \,kJ\, mol ^{-1}$ at $27^{\circ} C$. The enthalpy of combustion for the reaction is $- x \,kJ\,mol ^{-1}$, where $x$ is $.....$ (Nearest integer)
$\left(\right.$ Given $: R =8.3\, J\,K ^{-1} \,mol ^{-1}$ )
Statement $I$: $\mathrm{S}_8$ solid undergoes disproportionation reaction under alkaline conditions to form $\mathrm{S}^{2-}$ and $\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$
Statement $II$: $\mathrm{ClO}_4^{-}$can undergodisproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :