$(ii)\,CO + \frac{1}{2}{O_2} \to C{O_2};\,\Delta H = - 283.5\,kJ\,mol{e^{ - 1}}$
$(iii)\,CO + \frac{1}{2}{O_2} \to C{O_2};\,\Delta H = ??$
આપેલ : $\Delta H _{ f }{ }^\theta\left( Al _2 O _3\right)=-1700\,kJ\,mol ^{-1}$
$\Delta H _{ f }{ }^\theta\left( Fe _2 O _3\right)=-840\,kJ\,mol ^{-1}$
$Fe , Al$ અને $O$ નું મોલર દળ અનુક્રમે $56,27$ અને $16\,g\,mol ^{-1}$.
$CO_{2(g)}$ અને $H_2O$ ના $\Delta H_f$ અનુક્રમે $-395$ અને $ -286$ $kJ \,mol^{-1}$ છે........$KJ$
${C_{\left( {graphite} \right)}} + {O_{2\left( g \right)}} \to C{O_{2\left( g \right)}}\,;\Delta H = - 393.5\,kJ$
${H_{2\left( g \right)}} + 1/2{O_{2\left( g \right)}} \to {H_2}{O_{\left( l \right)}}\,;\,\Delta H = - 286.2\,kJ$
${C_2}{H_{4\left( g \right)}} + 3{O_{2\left( g \right)}} \to 2C{O_{2\left( g \right)}} + 2{H_2}{O_{\left( l \right)}}\,;\,\Delta H = - 1410.8\,kJ$