In the replacement reaction:R-Cl + MF rightar | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The given reaction is a Swarts reaction,which is used to prepare alkyl fluorides from alkyl chlorides or bromides.The reaction is driven by the pr

Vedclass · Accepted Answer

$Rb$

Vedclass · Answer

(C) The given reaction is a Swarts reaction,which is used to prepare alkyl fluorides from alkyl chlorides or bromides.The reaction is driven by the precipitation of the metal halide $(MCl)$ formed as a byproduct.For the reaction to be most favourable,the metal fluoride $(MF)$ should be soluble in the reaction medium,and the metal chloride $(MCl)$ should be insoluble (precipitate out).Among the given options,$RbF$ is the most soluble in organic solvents due to its lower lattice energy compared to $LiF$,$NaF$,and $KF$. Consequently,$RbCl$ is more likely to precipitate,driving the reaction forward.

In the replacement reaction:
$R-Cl + MF \rightarrow R-F + MCl$
The reaction will be most favourable if $M$ happens to be:

Similar Questions

The major product in the following reaction sequence is:

The reaction of $Cl_2$ with $CS_2$ in the presence of $AlCl_3$ gives .......

Describe the preparation of alkyl halides by halogen exchange reactions.

$C_2H_5Cl + AgF \longrightarrow C_2H_5F + AgCl$
The above reaction is called:

$CHCl_3$ and $HF$ lead to the formation of a compound of fluorine of molecular weight $70$. The compound is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

In the replacement reaction:$R-Cl + MF \rightarrow R-F + MCl$The reaction will be most favourable if $M$ happens to be: