When $KI$ is passed through a solution containing $KCl, KF,$ and $KBr$,what happens?

  • A
    $Cl_2$ and $Br_2$ are liberated.
  • B
    $Cl_2$ is liberated.
  • C
    $Cl_2, Br_2,$ and $F_2$ are liberated.
  • D
    None of these.

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