Question

Which compound in each of the following pairs will react faster in $S_{N}2$reaction with $\overline{O}H$ ?

$C{H}_{3}BrorC{H}_{3}I$

$(C{H}_3{)}_{3}CClorC{H}_{3}Cl$

Which compound in each of the following pairs will react faster in $S{N}_2$reaction with $\overline{O}H$ ?

Answer 1

$C{H}_3-I$ will react faster because bond dissociation enthalpy of C - I bond is less than that of C - Br bond.

$C{H}_{3}Cl$ will react faster because of less steric hindrance as compared to $(C{H}_3{)}_{3}CCl$.