Final answer:
To produce chlorine from sodium chloride, fluorine gas can be reacted with NaCl as it is more reactive than chlorine. The reaction is highly exothermic, forming sodium fluoride and chlorine gas.
Step-by-step explanation:
To produce chlorine gas (Cl2) from sodium chloride (NaCl), you would need to react the NaCl with a halogen that is more reactive than chlorine. This type of reaction is known as a halide displacement reaction, where a more reactive halogen displaces a less reactive halogen from its compound. According to the reactivity series of halogens, fluorine (F2) is the only halogen more reactive than chlorine. When fluorine reacts with sodium chloride, it can displace the chlorine to form sodium fluoride (NaF) and free chlorine gas (Cl2). The chemical equation for this reaction would be:
2 NaCl(s) + F2(g) → 2 NaF(s) + Cl2(g)
It's important to note that this reaction would be highly exothermic and should only be carried out under controlled laboratory conditions.