Q. $C + O_{2} \rightarrow CO_{2};$ $CO + \frac{1}{2}O_{2} \rightarrow CO_{2}$ Then the heat of formation of $CO$ is
A) $X - Y$
B) $Y - 2X$
C) $X + Y$
D) $2X - Y$
Explanation
(a)
$C + O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = x$ …(i)
$CO + \frac{1}{2}O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = y$ …(ii)
Eqs. (i) –(ii)
$C + \frac{1}{2}O_{2} \rightarrow CO,\ \mathrm{\Delta}H = x - y$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.