\(\Delta {H_{f}} = {(\Delta {H_C})_{{\text{reactant}}}} - {(\Delta {H_C})_{\Pr oduct}}\)
\((\Delta {H_{f}}) = \{ - 393.3 + 2 \times ( - 293.72)\} - \{ - 1108.76\} \)
\((\Delta {H_{f}}) = + 128.02\,\,kJ/mole\)
$S{O_2} + \frac{1}{2}{O_2} \to S{O_3} + y\,kcal$
$S{O_2}$ની સર્જન ઉષ્માનું મૂલ્ય શોધો
${H_{2\left( g \right)}} + 1/2{O_{2\left( g \right)}} \to {H_2}{O_{\left( l \right)}};\Delta {H_2}$ હોય, તો