When anhydrous copper(II) chloride, $\text{CuCl}_2$, reacts with water, $\text{CuCl}_2\cdot2\text{H}_2\text{O}$ is formed. The standard enthalpy changes of formation for this reaction are listed in the table. What is the standard enthalpy change for the reaction shown? $\text{CuCl}_2 + 2\text{H}_2\text{O} \rightarrow \text{CuCl}_2\cdot2\text{H}_2\text{O}$
- A$-1586\,\text{kJ mol}^{-1}$
- B$-316\,\text{kJ mol}^{-1}$
- C$-110\,\text{kJ mol}^{-1}$
- D$-30\,\text{kJ mol}^{-1}$