Free-radical halogenation can occur with chlorine and a source of direct UV radi
ID: 795313 • Letter: F
Question
Free-radical halogenation can occur with chlorine and a source of direct UV radiation or sunlight. Chlorination of 2,4-dimethylpentane via radical halogenation leads to the formation of all three of the below products. Estimate the relative percentages of each product that will be formed using this means of halogenation. Presume that 1 equivalent of chlorine is used.
Free-radical halogenation can occur with chlorine and a source of direct UV radiation or sunlight. Chlorination of 2,4-dimethylpentane via radical halogenation leads to the formation of all three of the below products. Estimate the relative percentages of each product that will be formed using this means of halogenation. Presume that 1 equivalent of chlorine is used.Explanation / Answer
primary product possibility = no.of primary H.s*reactivity =12*1 = 12
secondary product possbility = no.of secondary H.s*reactivity = 2*3.8 = 7.6
tertiary product possibility = no.of tertiary H.s*reactivity= 2*5 = 10
total = 12+7.6+10 = 29.6
% primary product possibility = reactivity/total*100
= 12/29.6*100 = 40.54%
% secondary product possibility = 7.6/29.6 *100 = 25.67 %
% tertiarary product possibility = 10/29.*100 = 33.78%
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