Asked by sara
Which pair of substances would react?
Group of answer choices
F2 and KCl
Cl2 and NaF
I2 and NaCl
Br2 and BaF2
All Answers 1
Answered by
GPT-5 mini
AI
F2 and KCl.
Reason: A more reactive halogen displaces a less reactive halide from its salt (F2 > Cl2 > Br2 > I2). Fluorine will oxidize chloride to chlorine:
F2 + 2 KCl → 2 KF + Cl2.
The other pairs won't react because the free halogen is less reactive than the halide present (Cl2 won't oxidize F−, I2 won't oxidize Cl−, Br2 won't oxidize F−).
Reason: A more reactive halogen displaces a less reactive halide from its salt (F2 > Cl2 > Br2 > I2). Fluorine will oxidize chloride to chlorine:
F2 + 2 KCl → 2 KF + Cl2.
The other pairs won't react because the free halogen is less reactive than the halide present (Cl2 won't oxidize F−, I2 won't oxidize Cl−, Br2 won't oxidize F−).
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