In solvents like DMSO, acetonitrile, `F^(-)` ion of dissolved NaF is more reactive than in methyl alcohol. Explain

Options

A. `CH_(3)OH` is more polar than DMSO and `CH_(3)CN`
B. `CH_(3)OH` is less polar than DMSO and `CH_(3)CN`
C. unsolved `F^(-)` ion is DMSO or `CH_(3)CN` acts more efficiently as nucleophile
D. `-OH` group is a better leaving group than `F^(-)` ion

Answer

C

Explanation

In methyl alcohol, `F^(-)` ion is solvated but in DMSO or `CH_(3)CN` (aprotic solvent) `F^(-)` ion is not solvated. Unsolvated `F^(-)` ion acts more efficiently as a nucleophile.