Question

Decreasing order of relative nucleophilicity of the following nucleophiles in protic solvent is –

, $A c \stackrel { \ominus } { \ominus }$ , $\mathrm { Ph } \stackrel { \ominus } { \ominus }$ , , H2O

• A. >> H2O > $A c \stackrel { \ominus } { \ominus }$ > $\mathrm { Ph } \stackrel { \ominus } { \ominus }$
• B. >> $\mathrm { Ph } \stackrel { \ominus } { \ominus }$ > $A c \stackrel { \ominus } { \ominus }$ > H2O
• C. > $\mathrm { Ph } \stackrel { \ominus } { \ominus }$ >> H2O > $A c \stackrel { \ominus } { \ominus }$
• D. >> $\mathrm { Ph } \stackrel { \ominus } { \ominus }$ > $A c \stackrel { \ominus } { \ominus }$ > H2O

Answer 1

Answer: (B)

>> $\mathrm { Ph } \stackrel { \ominus } { \ominus }$ > $A c \stackrel { \ominus } { \ominus }$ > H2O

Answer 2

Nucleophilicity $\propto$ Size (in group