MCQ
Main constituent of marsh gas is
- A${C_2}{H_2}$
- ✓$C{H_4}$
- C${H_2}S$
- D$CO$
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[Atomic masses (in $u$) $Mn =55 ; Cl =35.5 ; O =16, I =127, Na =23, K =39, S =32]$
${C_2}{H_{4(g)}} + {H_{2(g)}} \rightleftharpoons {C_2}{H_{6(g)}}\,;$
$\Delta H = -32.7\,Kcal$ carried out is a vessel, the equilibrium concentration of $C_2H_4$ can be increased by
$CO(g) + \frac{1}{2}{O_2}(g)\, \to \,C{O_2};\,\,\,\Delta H = 135.2\,kcal$
Then heat of formation of $CO(g)$ is .....$ kcal$