Question

For the reaction, $C_{\left(s\right)}+O_{2\left(g\right)}\to C{O}_{2\left(g\right)}$

• A. $\Delta H$>$\Delta U$
• B. $\Delta H$<$\Delta U$
• C. $\Delta H$=$\Delta U$
• D. Cannot be predicted

Answer 1

The correct option is C $\Delta H$=$\Delta U$

$\Delta H=\Delta U+\left(\Delta n\right)RT$
The number of moles of gas is same on both sides. Hence $\Delta n=0$