Question

A hydrocarbon contains all the three of H atoms, i.e., 1, 2, and 3. The relative ratios of abstraction of ................... H atoms are 5.0 : 3.8 : 1.0.

• A. 3 : 7 : 5
• B. 9 : 4 : 1
• C. 3 : 2 : 1
• D. None of these

Answer 1

The correct option is C 3 : 2 : 1

A hydrocarbon contains all the three of H atoms, i.e., 1, 2, and 3. The relative ratios of abstraction of 3 : 2 : 1 H atoms are 5.0 : 3.8 : 1.0.
The relative rate of abstraction of tertiary hydrogen is maximum as tertiary carbocation has maximum stability.
The relative rate of abstraction of primary hydrogen is minimum as primary hydrocarbon has lowest stability.