I have this reaction, for which I need the standard enthalpy of reaction:
$$\ce{CuO (s) + H2S (g) \rightarrow CuS (s) + H2O (g)}$$
This is the data from the NIST web book (standard formation enthalpies, $\mathrm{kJ}\cdot\mathrm{mol}^{-1}$):
- $\ce{CuO (s)}$: -156.60
- $\ce{H2S (g)}$: -20.5
- $\ce{H2O (g)}$ -241.83
There are no data tabulated for $\ce{CuS (s)}$, so how can I compute the standard reaction enthalpy lacking this data?