Give reasons in one or two sentence for each of the following: Fluorine can not be prepared form fluoride by chemical oxidation.

Explanation

To answer the question of why fluorine cannot be prepared from fluoride by chemical oxidation, we can break it down into the following steps:

1. **Understanding the Oxidation Process**: Fluorine (F₂) is the elemental form of fluorine, while fluoride (F⁻) is its ionic form. To prepare fluorine from fluoride, we would need to oxidize the fluoride ion (F⁻) to molecular fluorine (F₂).

2. **Reduction Potential**: The reduction potential for the half-reaction of converting F₂ to F⁻ is +2.87 volts. This high positive value indicates that the reduction of fluorine to fluoride is very favorable, meaning that fluoride ions are stable and do not easily oxidize back to fluorine.

3. **Feasibility of the Reaction**: Since the reduction potential is positive, trying to oxidize fluoride ions to form fluorine would result in a negative potential for the reverse reaction. This indicates that the process is non-spontaneous and cannot occur under standard conditions.

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