which is more reactive nucleophile in polar protic solvent ?

Which is more reactive nucleophile in polar aprotic solvent ?

Which is more reactive nucleophile in polar aprotic solvent ?

Rank the following species in order of decreasing nucleophilicity in a polar protic solvent (most rarr least nucleophilic):

Rank the following species in order of decreasing nucleophilicity in a polar protic solvent ("most"to" least nucleophilic"): (I) CH_(3)CH_(2)CH_(2)O^(-) " " (II) CH_(3)CH_(2)CH_(2)S^(-) (III) " "CH_(3)CH_(2)overset(O)overset(||)C-O^(-)

Arrange the following species in order of decreasing nucleophilicity in a polar protic solvent. (I). CH_(3)CH_(2)CH_(2)O^(-) , (II). CH_(3)CH_(2)CH_(2)S^(-) (III). CH_(3)-CH_(2)-overset(O)overset(||)(C)-overline(O)

SN^2 reactions of alkyl halides is a bimolecular reaction which take place through formation of a transition state. The rate of reaction depends on the concentration of alkyl halide and nucleophile.The reaction is favoured by strong nucleophlie in polar aprotic solvents. In which of the following solvents SN^2 reaction is more favourable