p-Block elementsHard

Question

Which of the following will not displace the halogen from the solution of the halide ?

Options

A.Br2 added to NaI
B.Br2 added to NaCl
C.Cl2 added to KCl
D.Cl2 added to NaF

Solution

Smaller halogen (i.e., stronger oxidising agent) displaces bigger halogen (i.e. weaker oxidising agent) from solution of its halide. e.g., Br- + Cl2 →  Br2 + 2Cl-.

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