Question

The decreasing order of rate of SN2 reaction is :

CH3–Cl CH3–CH2–Cl

• A. IV>III>II>I
• B. II>III>I>IV
• C. II>I>IV>III
• D. None

Answer 1

Answer: (C)

II>I>IV>III

Answer 2

Rate of $S_{N}2 \propto \lbrack R - X\rbrack\left\lbrack Nu^{-} \right\rbrack$

}{r_{2} = 1.5r_{1}}$$