When calcium reacts with water, calcium hydroxide and hydrogen are produced. $\text{Ca(s)} + 2\text{H}_2\text{O(l)} \rightarrow \text{Ca(OH)}_2\text{(s)} + \text{H}_2\text{(g)}$ For this reaction, the standard enthalpy change is $-414\,\text{kJ mol}^{-1}$. What additional information is required to determine the standard enthalpy change of formation of calcium hydroxide, $\Delta H_f^\circ(\text{Ca(OH)}_2\text{(s)})$?
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only