In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different rates. At 35 °C, primary, secondary, and tertiary C-H bonds react at relative rates of 1 : 3.9: 5.2 respectively. These are conditions of kinetic control where product ratios are determined by relative rates of formation. For example, if A is formed twice as fast as B, the A:B product ratio will be 2. Consider chlorination of the alkane below at 35 °C.

Chemistry by OpenStax (2015-05-04)
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Chapter12: Kinetics
Section: Chapter Questions
Problem 50E: For the past 10 years, the unsaturated hydrocarbon 1, 3-butadiene (CH2 = CH - CH = CH2) has ranked...
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In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different
rates. At 35 °C, primary, secondary, and tertiary C-H bonds react at relative rates of 1 : 3.9: 5.2
respectively.
These are conditions of kinetic control where product ratios are determined by relative rates of
formation. For example, if A is formed twice as fast as B, the A:B product ratio will be 2.
Consider chlorination of the alkane below at 35 °C.
1. Specify the most reactive C-H bond(s), a-c.
Two non-equivalent C-H bonds of comparable reactivity should be separated by commas,
1.e. a,c.
2. Specify the site of chlorination in the major monochloro substitution product, a-c.
Two products that form in comparable quantities should be separated by commas, I.e. a,c
Transcribed Image Text:In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different rates. At 35 °C, primary, secondary, and tertiary C-H bonds react at relative rates of 1 : 3.9: 5.2 respectively. These are conditions of kinetic control where product ratios are determined by relative rates of formation. For example, if A is formed twice as fast as B, the A:B product ratio will be 2. Consider chlorination of the alkane below at 35 °C. 1. Specify the most reactive C-H bond(s), a-c. Two non-equivalent C-H bonds of comparable reactivity should be separated by commas, 1.e. a,c. 2. Specify the site of chlorination in the major monochloro substitution product, a-c. Two products that form in comparable quantities should be separated by commas, I.e. a,c
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