Suppose a mixture is made by mixing together 10 drops of a water solution of a halogen, 10 drops of a water solution of the potassium salt of the halogen and 10 drops of hexane. Upon shaking, the hexane layer takes on a distinct purple color. Which of the following pairs could not represent the halogen and halogen salt that were mixed? a) I2, KI b) Cl2, KI c) Cl2, KBr d) I2, KCl

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