Question

For the reaction, $F{e}_2{O}_3\left(s\right)+3CO\left(g\right)\to 3C{O}_2\left(g\right)+2Fe\left(l\right)$ which of the following is correct?

• A. $\Delta H^{\circ }=\Delta E^{\circ }+3RT$
• B. $\Delta H^{\circ }=\Delta E^{\circ }+RT$
• C. $\Delta H^{\circ }=\Delta E^{\circ }$
• D. $\Delta H^{\circ }=\Delta E^{\circ }-RT$

Answer 1

Answer: (C)

$\Delta H^{\circ }=\Delta E^{\circ }$

$\Delta H=\Delta E+\Delta n_{g}RT$ since for the above reaction $\Delta n_g=0$
$\therefore \Delta H^{\circ }=\Delta E^{\circ }$