The rate of dehydrohalogenation of which one among the following is less?

Question

The rate of dehydrohalogenation of which one among the following is less? (A) CH 3 CH 2 CH 2 Br (B) CH 3 CH 2 CH 2 Cl (C) Cl 3 I 3 Cl 2 Cl H 2 (D) CH3- underset overset|CH3CH-CH2l

Tardigrade Admin · Accepted Answer

Dehydrohalogenation reaction order is alkyl halide relative reactivity order is

3^{\circ} > 2^{\circ} > 1^{\circ}

Alkyl halide reactivity order is

I > B r > Cl > F

(in

β

elimination of

F

is rarely used).

When heated with strong base, alkyl halides typically undergo a 1,2 -elimination reaction to generate alkenes.

Q. The rate of dehydrohalogenation of which one among the following is less?

$C H_{3} C H_{2} C H_{2} B r$

$C H_{3} C H_{2} C H_{2} Cl$

$C l_{3} I_{3} C l_{2} Cl H_{2}$

$C H_{3} - C ∣ H_{3} C H - C H_{2} l$

Q. The rate of dehydrohalogenation of which one among the following is less?

CH3​CH2​CH2​Br

CH3​CH2​CH2​Cl

Cl3​I3​Cl2​ClH2​

CH3​−C∣H3​C​H−CH2​l

Dehydrohalogenation reaction order is alkyl halide relative reactivity order is 3∘>2∘>1∘ Alkyl halide reactivity order is I>Br>Cl>F (in β elimination of F is rarely used). When heated with strong base, alkyl halides typically undergo a 1,2 -elimination reaction to generate alkenes.

$C H_{3} C H_{2} C H_{2} B r$

$C H_{3} C H_{2} C H_{2} Cl$

$C l_{3} I_{3} C l_{2} Cl H_{2}$

$C H_{3} - C ∣ H_{3} C H - C H_{2} l$