Which equation shows a reaction enthalpy that is equal to the standard enthalpy change of atomisation of chlorine?
- A$\tfrac{1}{2}\text{Cl}_2\text{(g)} \rightarrow \text{Cl(g)}$
- B$\tfrac{1}{2}\text{Cl}_2\text{(l)} \rightarrow \text{Cl(g)}$
- C$\text{Cl}_2\text{(g)} \rightarrow 2\text{Cl(g)}$
- D$\text{Cl}_2\text{(l)} \rightarrow 2\text{Cl(g)}$