At Some Temperatures,the Relative Reactivities of 3°,2° and 1° Alkane

question 78

Multiple Choice

At some temperatures,the relative reactivities of 3°,2° and 1° alkane hydrogens in free radical chlorination are in the ratio of 5:3:1.Thus,monochlorination of isopentane should produce these percentages of 2-chloro-2-methylbutane (A) ,combined 1-chloro-2-methylbutane and 1-chloro-3-methylbutane (B) ,and 2-chloro-3-methylbutane (C) :

• A)8% A,75% B,17% C
• B)25% A,45% B,30% C
• C)29% A,44% B,18% C
• D)30% A,35% B,35% C
• E)36% A,43% B,21% C

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