Which of the following is Swart’s reaction?

Options

A. `C_(2)H_(5)"Cl + AgF" overset(Delta )(rarr) C_(2)H_(5)F +`AgCl
B. `2C_(2)H_(5)Br + 2Zn rarr (C_(2) H_(5))_(2) Zn + ZnBr_(2)`
C. `2CHCl_(3) + 6Ag rarr CH equiv CH +` 6AgCl
D. `C_(2)H_(5)Br + "NaI" rarr C_(2)H_(5)I + `NaBr

Answer

To determine which of the given reactions is Swart's reaction, we need to understand the specifics of this reaction.

### Step-by-Step Solution:

1. **Identify Swart's Reaction**:
Swart's reaction is a well-known reaction in organic chemistry that involves the conversion of alkyl halides (specifically alkyl chlorides or alkyl bromides) into alkyl fluorides.

2. **Reagents Used**:
The reagents commonly used in Swart's reaction are:
- Silver fluoride (AgF)
- Mercury(II) fluoride (Hg2F2)
- Antimony pentafluoride (SbF5)

3. **Reactants**:
The reactants in Swart's reaction can be:
- Alkyl Chloride (RCl)
- Alkyl Bromide (RBr)

4. **Products**:
The product of Swart's reaction is:
- Alkyl Fluoride (Rf)

5. **Example of the Reaction**:
For instance, if we take ethyl chloride (C2H5Cl) as the alkyl chloride and react it with silver fluoride (AgF), the reaction would be:
\[ C2H5Cl + AgF \rightarrow C2H5F + AgCl \]
Here, ethyl fluoride (C2H5F) is formed along with silver chloride (AgCl).

6. **Analyzing the Options**:
If one of the options provided in the question is the reaction of ethyl chloride (C2H5Cl) with AgF yielding ethyl fluoride (C2H5F) and AgCl, then that option represents Swart's reaction.

7. **Conclusion**:
Based on the above analysis, the correct answer to the question "Which of the following is Swart’s reaction?" would be the option that describes the reaction of an alkyl chloride or alkyl bromide with AgF or Hg2F2 to produce an alkyl fluoride.