Question

what is major product in mono chlorination of propane? ​

Answer 1

Explanation:

It's easy to talk about this reaction since all the hydrogens are equal. No matter which hydrogen you replace, you get the same product (CH3Cl). Likewise, mono-chlorination of ethane also gives just one product: chloroethane.

Answer 2

Answer:

Explanation:

If you see the structure of propane.

You will notice 6 "1°" H are of same type and 2 "2°" H

Rate of substitution of H in free radical chlorination is

3°H : 2°H : 1°H → 5 : 3.8 : 1

A) when 1° H is substituted ≡ 6 * 1 = 6

B) when 2° H is substituted ≡ 2 * 3.8 = 7.6

Now percentage of products

A) 6/13.6 * 100 = 44.11 %

B) 7.6/13.6 * 100 = 55.88%

Hence, 2°Hydrogen will be substituted. and it will be the major product.

Note; If you given to do Bromination then always 3° bromides is major because its selectivity is much more then 1° & 2°

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Amrit