${H_2}O\left( g \right) + C\left( s \right) \to CO\left( g \right) + {H_2}\left( g \right);\Delta H = 131\,kJ$
$CO\left( g \right) + \frac{1}{2}{O_2}\left( s \right) \to C{O_2}\left( g \right);\Delta H = - 282\,kJ$
${H_2}\left( g \right) + \frac{1}{2}{O_2}\left( s \right) \to {H_2}O\left( g \right);\Delta H = - 242\,kJ$
$C(s) + O_2(g) \to CO_2(g); \Delta H = X\,kJ$
The value of $X$ will be......$kJ$
${\text{CO}}({\text{g}}) + \frac{1}{2}{{\text{O}}_2}({\text{g}}) \to {\text{C}}{{\text{O}}_2}({\text{g}})\,\,\Delta {\text{H}} = - 282\,{\text{KJ}}.....{\text{(2)}}$
${{\text{H}}_2}({\text{g}}) + \frac{1}{2}{{\text{O}}_2}({\text{g}}) \to {{\text{H}}_2}{\text{O}}\,\,\Delta {\text{H = }} - 242\,{\text{KJ}}....(3)$
${C_{(s)}} + {{\text{O}}_2}({\text{g}}) \to {\text{C}}{{\text{O}}_2}\,\Delta {\text{H}} = {\text{x}}\,{\text{KJ}}....{\text{(4)}}$
$(1) + (2) + (3) = 4$
$131 - 282 - 242 = {\text{x}}$
$x = - 393\,{\text{kJ}}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Product $(A)$ of the above reaction is