An alkane with a molecular formula C 6 H 14 reacts with chlorine in the presence of light and heat to give two constitutionally isomeric monochlorides of molecular formula C 6 H 13 Cl. What is the most reasonable starting alkane?

Question

An alkane with a molecular formula C 6 H 14 reacts with chlorine in the presence of light and heat to give two constitutionally isomeric monochlorides of molecular formula C 6 H 13 Cl. What is the most reasonable starting alkane? (A)  n- Hexane (B) 2, 2-Dimethylbutane (C) 2, 3-Dimethylbutane (D) 3-Methylpentane

Tardigrade Admin · Accepted Answer

2,3-dimethylbutane has 12 equivalent 1°H and two equivalent 3° hence it gives two constitutionally isomeric monochlorides of molecular formulae <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/d9bfcf94b9e3478161e083f033f3ae31-.png" />

Q. An alkane with a molecular formula $C_{6} H_{14}$ reacts with chlorine in the presence of light and heat to give two constitutionally isomeric monochlorides of molecular formula $C_{6} H_{13} Cl$ . What is the most reasonable starting alkane?

$n -$ Hexane

2, 2-Dimethylbutane

2, 3-Dimethylbutane

3-Methylpentane

$2, 3$ -dimethylbutane has $12$ equivalent $1^{\circ} H$ and two equivalent $3^{\circ}$ hence it gives two constitutionally isomeric monochlorides of molecular formulae

Q. An alkane with a molecular formula C6​H14​ reacts with chlorine in the presence of light and heat to give two constitutionally isomeric monochlorides of molecular formula C6​H13​Cl. What is the most reasonable starting alkane?

n− Hexane