No reaction occurs in which of the following equations?

1.	No reaction occurs in which of the following equations?
Answer» `I^(ө)-FE^(2+)rarr` `F_(2)+2NaClrarr` `Cl_(2)+2NaFrarr` `I_(2)+2NaBerarr` Solution :Reduction potential of `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)`. So `F_(2)` can diplace `CI^(ө), Br^(ө)`, and `I^(ө)` but not VICE VERSA and `Br_(2)` can displace only `I^(ө)` but not vice versa. In (a), `Fe( "not" Fe^(2+))` is a better reducing AGENT than `I^(ө)`.

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