Question
The enthalpy of formation of $NH_3$ is $-46 \, \text{kJ mol}^{-1}$. The enthalpy change for the reaction: $2 \, NH_3 (g) \rightarrow N_2 (g) + 3 \, H_2 (g)$ is
The enthalpy of formation of $NH_3$ is $-46 \, \text{kJ mol}^{-1}$. The enthalpy change for the reaction: $2 \, NH_3 (g) \rightarrow N_2 (g) + 3 \, H_2 (g)$ is