Chemistry - Thermodynamics - I Question with Solution | TestHub

[It is known that the formation of CO or ${\mathrm{CO}}_2$ depends upon the relative amount of ${\mathrm{O}}_2$ and carbon. When ${\mathrm{O}}_2$ is limited it gives CO , when in excess gives ${\mathrm{CO}}_2$. CO can be converted to ${\mathrm{CO}}_2$ when reacted with ${\mathrm{O}}_2$.]

When 1 mol of CO is formed from 1 mol of carbon and $\frac{1}{2}\mathrm{mol}$ of ${\mathrm{O}}_2,25\mathrm{Kcal}$ heat is evolved. When 1 mol of ${\mathrm{CO}}_2$ is formed from 1 mol of carbon and 1 mol of ${\mathrm{O}}_2,75\mathrm{Kcal}$ heat is evolved. Select the option(s) in which heat evolved is more than 100 Kcal .