Which reaction will NOT take place: A) Cl2(g) + 2KI(aq) -> 2KCl(aq) + I2(aq) B) I2(aq) + 2KBr(aq) -> 2KI(aq) + Br2(aq)?

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Question 22:
This question asks which reaction will NOT take place. This is determined by the reactivity series of halogens: Chlorine ($\text{Cl}_2$) is more reactive than Bromine ($\text{Br}_2$), which is more reactive than Iodine ($\text{I}_2$). A more reactive halogen can displace a less reactive halide from its salt solution.

• A) $\text{Cl}_2(\text{g}) + \text{2KI(aq)} \to \text{2KCl(aq)} + \text{I}_2(\text{aq})$: Chlorine displaces iodine. (Takes place)
• B) $\text{I}_2(aq) +