Alkyl Halides - Result Question 36

####36. The reaction condition leading to the best yield of $C _2 H _5 Cl$ are-

$(1986,1 M)$

(a) $C _2 H _6$ (excess) $+Cl _2 \xrightarrow{\text { UV light }}$

(b) $C _2 H _6+Cl _2$ (excess) $\xrightarrow[\text { room temp }]{\text { dark }}$

(c) $C _2 H _6+Cl _2$ (excess) $\xrightarrow{\text { UV light }}$

(d) $C _2 H _6+Cl _2 \xrightarrow{\text { UV light }}$

Show Answer

Answer:

Correct Answer: 36. (a)

Solution:

  1. During chlorination of alkane, if excess of alkane is treated with $Cl _2(g)$ in presence of light or heat, chance of mono-chlorination predominate.

$$ C _2 H _6 \text { (excess) }+Cl _2 \xrightarrow{\text { UV-light }} CH _3 CH _2 Cl+HCl $$



NCERT Chapter Video Solution

Dual Pane