Question

Consider the reaction : $N_2 + 3H_2 \rightarrow 2NH_3$ carried out at constant temperature and pressure. If $\Delta H$ and $\Delta U$ are the enthalpy and internal energy changes for the reaction, which of the following expressions is true ?
(a) $\Delta H \ \textgreater \ \Delta U$
(b) $\Delta H \ \textless \ \Delta U$
(c) $\Delta H = \Delta U$
(d) $\Delta H = 0$

Answer 1

(b) part is the correct option